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Subject 

1. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (125,317)
2. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (125,317)
3. General Tagging Of New Technological Developments  (125,317)
4. Technical Subjects Covered By Former Uspc  (122,689)
5. Technical Subjects Covered By Former Us Classification  (108,906)
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16. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (22,120)
17. Human Necessities  (19,159)
18. Fixed Constructions  (18,843)
19. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (17,134)
20. Keys  (13,697)
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Databases 

1. esp@cenet  (125,356)
2. ProQuest Central  (7,900)
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5. Nature  (3,763)
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8. The American Journal Of The Medical Sciences  (835)
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