Refine My Results

Creation Date 

1. Before 1700  (6)
2. 1700 To 1909  (90,958)
3. 1910 To 1939  (257,202)
4. 1940 To 1952  (324,712)
5. After 1952  (103,663)
6. More options 

New Records 

1. New From Last Month  (12)
2. New From Last 3 Month  (47)
3. More options 

Resource Type 

1. Articles  (410,401)
2. Patents  (357,161)
3. Reviews  (3,778)
4. Images  (2,263)
5. Web Resources  (754)
6. Reports  (689)
7. Journals  (517)
8. Videos  (343)
9. Books  (250)
10. Thesises (postgraduate)  (113)
11. Book Chapters  (49)
12. Drawing/Maps  (49)
13. Conference Proceedings  (49)
14. Text Resources  (42)
15. Archival Material / Manuscripts  (35)
16. Government Documents  (14)
17. Other  (13)
18. magazinearticle  (9)
19. References  (8)
20. Datasets  (3)
21. More options 

Subject 

1. Science & Technology  (411,798)
2. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (357,071)
3. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (357,071)
4. General Tagging Of New Technological Developments  (357,071)
5. Technical Subjects Covered By Former Uspc  (335,615)
6. Technical Subjects Covered By Former Us Classification  (273,234)
7. Life Sciences & Biomedicine  (248,021)
8. Transporting  (137,297)
9. Performing Operations  (137,297)
10. Old Medline  (94,830)
11. Heating  (94,127)
12. Lighting  (94,085)
13. Mechanical Engineering  (94,068)
14. Weapons  (94,056)
15. Blasting  (93,993)
16. Physical Sciences  (90,929)
17. Chemistry  (83,437)
18. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (78,899)
19. Medicine, General & Internal  (76,584)
20. General & Internal Medicine  (76,460)
21. More options 

Databases 

1. esp@cenet  (357,161)
2. ProQuest Central  (126,966)
3. PubMed Central  (116,765)
4. MEDLINE  (96,870)
5. HighWire Press (Free Journals)  (87,744)
6. GFMER Free Medical Journals  (82,958)
7. ProQuest One Psychology  (52,396)
8. DOAJ Directory of Open Access Journals  (30,314)
9. JSTOR Early Journal Content  (28,766)
10. Wiley-Blackwell Open Access Titles  (9,615)
11. ROAD: Directory of Open Access Scholarly Resources  (8,378)
12. IOP Publishing Free Content  (3,894)
13. Europeana Collections  (3,685)
14. Project Euclid Open Access  (3,504)
15. Gallica Periodicals  (3,279)
16. American Mathematical Society Publications (Freely Accessible)  (2,382)
17. IngentaConnect Free/Open Access Journals  (2,321)
18. Free E- Journals  (2,009)
19. Oxford Journals Open Access Collection  (1,962)
20. Wiley-Blackwell AGU Digital Library  (1,674)
21. More options 

Language 

1. English  (772,574)
2. Japanese  (19,357)
3. German  (1,830)
4. Dutch  (1,048)
5. French  (604)
6. Russian  (564)
7. Polish  (431)
8. Hungarian  (239)
9. Finnish  (161)
10. Danish  (151)
11. Portuguese  (120)
12. Spanish  (87)
13. Latin  (65)
14. Norwegian  (50)
15. Bokmål, Norwegian  (50)
16. Italian  (36)
17. Swedish  (33)
18. Czech  (3)
19. Persian  (2)
20. More options 

Journal Title 

1. Annals Of Surgery  (8,145)
2. Bmj  (30,715)
3. British Medical Journal  (31,091)
4. Canadian Medical Association Journal  (7,115)
5. Industrial And Engineering Chemistry  (10,931)
6. Journal Of The American Chemical Society  (21,254)
7. Nature  (45,583)
8. The American Journal Of Physiology  (9,545)
9. The Journal Of Biological Chemistry  (10,920)
10. The New England Journal Of Medicine  (15,107)
11. More options