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Creation Date 

1. Before 1960  (42,509)
2. 1960 To 1975  (54,093)
3. 1976 To 1991  (233,340)
4. 1992 To 2008  (643,435)
5. After 2008  (1,124,805)
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New Records 

1. New From Last Week  (1)
2. New From Last Month  (10)
3. New From Last 3 Month  (38)
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Resource Type 

1. Patents  (2,101,005)
2. Newsletter Articles  (2,154)
3. Articles  (520)
4. magazinearticle  (485)
5. Books  (19)
6. Reports  (17)
7. Reviews  (13)
8. Web Resources  (9)
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10. Newspaper Articles  (5)
11. Thesises (postgraduate)  (5)
12. References  (4)
13. Images  (3)
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15. Text Resources  (1)
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Subject 

1. Education  (2,101,028)
2. Physics  (2,101,014)
3. Advertising  (2,101,008)
4. Cryptography  (2,101,005)
5. Display  (2,101,005)
6. Signs  (844,974)
7. Displaying  (844,973)
8. Labels Or Name-Plates  (844,973)
9. Electricity  (548,055)
10. Diagrams  (473,022)
11. Educational Or Demonstration Appliances  (473,021)
12. Planetaria  (473,021)
13. Appliances For Teaching, Or Communicating With, The Blind,deaf Or Mute  (473,021)
14. Globes  (473,021)
15. Counting  (407,326)
16. Calculating  (407,323)
17. Computing  (407,323)
18. Optics  (337,141)
19. Electric Digital Data Processing  (288,539)
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Databases 

1. esp@cenet  (2,101,005)
2. ProQuest Central  (3,092)
3. DOAJ Directory of Open Access Journals  (93)
4. GFMER Free Medical Journals  (74)
5. MEDLINE  (69)
6. ROAD: Directory of Open Access Scholarly Resources  (68)
7. HighWire Press (Free Journals)  (39)
8. JSTOR Early Journal Content  (38)
9. PubMed Central  (36)
10. U.S. Government Documents  (19)
11. Springer Nature OA/Free Journals  (11)
12. IOP Publishing Free Content  (11)
13. Wiley-Blackwell Open Access Titles  (11)
14. Freely Accessible Journals  (10)
15. Education Resources Information Center (ERIC)  (10)
16. Public Library of Science (PLoS)  (9)
17. IOPscience (Open Access)  (9)
18. ProQuest One Psychology  (8)
19. Trove Australian Thesis (Full Text - Open Access)  (4)
20. DTIC Technical Reports  (3)
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Language 

1. English  (1,808,584)
2. Chinese  (511,505)
3. French  (226,196)
4. German  (160,012)
5. Korean  (124,367)
6. Japanese  (113,787)
7. Spanish  (23,045)
8. Russian  (17,861)
9. Portuguese  (11,577)
10. Italian  (6,218)
11. Swedish  (3,976)
12. Dutch  (3,387)
13. Finnish  (2,649)
14. Danish  (2,622)
15. Polish  (2,439)
16. Norwegian  (1,758)
17. Ukrainian  (1,682)
18. Czech  (1,369)
19. Turkish  (1,226)
20. Romanian  (671)
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Journal Title 

1. Air Conditioning, Heating & Refrigeration News  (14)
2. Aircraft Engineering  (11)
3. Chemical Engineering  (123)
4. Electrical Apparatus  (15)
5. Environmental Health Perspectives  (13)
6. Hydraulics & Pneumatics  (19)
7. Machine Design  (99)
8. Plant Engineering  (38)
9. Science  (22)
10. Science News  (16)
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