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Creation Date 

1. Before 1958  (15,100)
2. 1958 To 1974  (47,758)
3. 1975 To 1991  (295,048)
4. 1992 To 2009  (1,205,887)
5. After 2009  (2,327,787)
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New Records 

1. New From Last Week  (240)
2. New From Last Month  (5,746)
3. New From Last 3 Month  (28,385)
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Resource Type 

1. Articles  (3,409,670)
2. Book Chapters  (104,044)
3. magazinearticle  (99,022)
4. Reviews  (96,922)
5. Conference Proceedings  (34,580)
6. Thesises (postgraduate)  (28,561)
7. Books  (28,242)
8. Patents  (23,700)
9. Reports  (13,806)
10. Web Resources  (9,962)
11. Newspaper Articles  (8,288)
12. References  (6,572)
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17. Journals  (896)
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19. Drawing/Maps  (532)
20. Videos  (466)
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Subject 

1. Science & Technology  (2,501,673)
2. Life Sciences & Biomedicine  (1,855,533)
3. Environmental Sciences & Ecology  (1,128,386)
4. Environmental Sciences  (821,985)
5. Science & Technology - Other Topics  (645,916)
6. Ecology  (599,313)
7. Multidisciplinary Sciences  (542,262)
8. Physical Sciences  (507,326)
9. Animals  (455,603)
10. Humans  (388,048)
11. Biological And Medical Sciences  (379,444)
12. Fundamental And Applied Biological Sciences. Psychology  (357,915)
13. Life Sciences  (240,167)
14. Technology  (229,009)
15. Female  (210,426)
16. Social Sciences  (206,365)
17. Agriculture  (198,806)
18. Male  (198,803)
19. Animal, Plant And Microbial Ecology  (194,891)
20. Biology  (194,316)
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Author/Creator 

1. Takken, Willem  (194)
2. Thompson, Ian  (166)
3. Perera, Ajith  (71)
4. Altomare, Mary  (27)
5. Pearson, Greg  (16)
6. Euler, Dave  (14)
7. West, Jennifer  (13)
8. Fast, Janet  (9)
9. Gill, Don  (7)
10. Keefe, Janice  (6)
11. Fast, Janet  (6)
12. Brzeski, Veronika  (3)
13. Keefe, Janice  (2)
14. National Academy of Engineering  (2)
15. Perera, Ajith  (2)
16. West, Jennifer  (2)
17. Richards, Deanna J  (2)
18. Sprague, Ashley  (2)
19. National Research Council (U.S.)  (2)
20. Takken, Willem  (2)
21. National Academy of Sciences (U.S.)  (2)
22. Caio Yurgel  (1)
23. Levin, Simon A  (1)
24. Project Muse  (1)
25. Allenby, Braden R  (1)
26. Gill, Don  (1)
27. Heidary-Monfared, Sadra  (1)
28. Thompson, Ian  (1)
29. Geddes, Frank  (1)
30. Magera, Anna  (1)
31. Sprague, Ashley  (1)
32. Altomare, Mary  (1)
33. Fuller, Susanna D  (1)
34. Anton F Post; George S Bullerjahn  (1)
35. Geddes, Frank  (1)
36. Institute of Medicine  (1)
37. Takuji Ohyama  (1)
38. Johanna Kramm (Ed.); Martin Zimmermann (Ed.); Melanie Pichler (Ed.); Anke Schaffartzik (Ed.)  (1)
39. Magera, Anna  (1)
40. Euler, Dave  (1)
41. Laws, Richard M  (1)
42. Pearson, Greg  (1)
43. Chapman, Sherry Ann  (1)
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Databases 

1. ProQuest Central  (2,428,258)
2. DOAJ Directory of Open Access Journals  (1,295,603)
3. ROAD: Directory of Open Access Scholarly Resources  (1,102,031)
4. GFMER Free Medical Journals  (990,389)
5. MEDLINE  (924,564)
6. PubMed Central  (848,333)
7. Public Library of Science (PLoS)  (301,916)
8. HighWire Press (Free Journals)  (255,957)
9. JSTOR Early Journal Content  (206,119)
10. Springer Nature OA/Free Journals  (170,450)
11. ProQuest One Psychology  (165,374)
12. Wiley-Blackwell Open Access Titles  (147,554)
13. Nature Open Access  (96,390)
14. Ebook Central - Academic Complete  (94,913)
15. Hyper Article en Ligne (HAL) (Open Access)  (82,570)
16. Coronavirus Research Database  (64,561)
17. Freely Accessible Journals  (56,849)
18. Wiley-Blackwell AGU Digital Library  (55,908)
19. IOP Publishing Free Content  (46,947)
20. IOPscience (Open Access)  (40,556)
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Language 

1. English  (3,768,658)
2. Japanese  (446,432)
3. Portuguese  (45,899)
4. Spanish  (38,827)
5. French  (33,474)
6. Chinese  (32,863)
7. German  (15,997)
8. Russian  (8,259)
9. Norwegian  (4,447)
10. Croatian  (3,518)
11. Italian  (2,415)
12. Polish  (2,193)
13. Catalan  (2,117)
14. Korean  (2,020)
15. Czech  (1,890)
16. Swedish  (1,647)
17. Turkish  (1,640)
18. Slovak  (1,175)
19. Dutch  (940)
20. Ukrainian  (798)
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Journal Title 

1. Environmental Science And Pollution Research International  (37,526)
2. International Journal Of Environmental Research And Public Health  (54,045)
3. Nature  (116,242)
4. Nature Communications  (61,525)
5. Plos One  (283,388)
6. Proceedings Of The National Academy Of Sciences  (46,567)
7. Proceedings Of The National Academy Of Sciences - Pnas  (104,520)
8. Remote Sensing  (32,421)
9. Science  (58,220)
10. Sustainability  (77,126)
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