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Creation Date 

1. Before 1960  (34,155)
2. 1960 To 1975  (76,081)
3. 1976 To 1991  (301,218)
4. 1992 To 2008  (492,888)
5. After 2008  (1,273,599)
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New Records 

1. New From Last Month  (84,016)
2. New From Last 3 Month  (84,017)
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Resource Type 

1. Patents  (2,182,218)
2. Books  (80)
3. Articles  (69)
4. Book Chapters  (17)
5. Conference Proceedings  (5)
6. Thesises (postgraduate)  (2)
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Subject 

1. Physics  (2,182,263)
2. Testing  (2,182,221)
3. Measuring Magnetic Variables  (1,479,438)
4. Measuring Electric Variables  (1,479,438)
5. Electricity  (587,998)
6. Tariff Metering Apparatus  (521,318)
7. Arrangements For Measuring Two Or More Variables Not Coveredin A Single Other Subclass  (521,318)
8. Measuring Not Specially Adapted For A Specific Variable  (521,318)
9. Measuring Or Testing Not Otherwise Provided For  (521,318)
10. Basic Electric Elements  (274,969)
11. Transporting  (185,128)
12. Performing Operations  (185,128)
13. Counting  (175,313)
14. Calculating  (175,312)
15. Computing  (175,312)
16. Conversion Or Distribution Of Electric Power  (170,336)
17. Generation  (170,336)
18. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (157,688)
19. Controlling  (152,245)
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Databases 

1. esp@cenet  (2,182,218)
2. ProQuest Central  (46)
3. DOAJ Directory of Open Access Journals  (29)
4. ROAD: Directory of Open Access Scholarly Resources  (26)
5. Geneva Foundation Free Medical Journals at publisher websites  (14)
6. PubMed Central  (13)
7. Ebook Central - Academic Complete  (11)
8. SpringerOpen website  (10)
9. MEDLINE  (8)
10. ProQuest One Psychology  (7)
11. DOAB: Directory of Open Access Books  (5)
12. RePEc  (4)
13. SciELO  (3)
14. SpringerLink Fully Open Access Books  (3)
15. OAPEN  (3)
16. Trove Australian Thesis (Full Text - Open Access)  (2)
17. Wiley Online Library Open Access  (2)
18. Education Resources Information Center (ERIC)  (2)
19. Coronavirus Research Database  (2)
20. ScholarVox International  (2)
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Language 

1. English  (1,813,257)
2. Chinese  (679,030)
3. French  (255,444)
4. German  (249,061)
5. Korean  (86,428)
6. Japanese  (65,579)
7. Russian  (27,911)
8. Spanish  (15,701)
9. Portuguese  (8,155)
10. Italian  (7,120)
11. Swedish  (5,582)
12. Polish  (4,074)
13. Finnish  (3,368)
14. Dutch  (2,929)
15. Danish  (2,819)
16. Norwegian  (2,529)
17. Romanian  (1,670)
18. Ukrainian  (1,387)
19. Czech  (952)
20. Hungarian  (489)
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Journal Title 

1. Acoustics Australia  (1)
2. Advances In Electrical And Electronic Engineering  (1)
3. Amino Acids  (1)
4. Ams Review  (1)
5. Crime Science  (3)
6. Psicologia, Reflexão E Crítica  (2)
7. Sensors  (2)
8. Social Indicators Research  (2)
9. Sport Mont  (2)
10. Sustainability  (3)
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