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Creation Date 

1. Before 1960  (34,152)
2. 1960 To 1975  (76,076)
3. 1976 To 1991  (301,206)
4. 1992 To 2008  (492,853)
5. After 2008  (1,275,436)
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New Records 

1. New From Last Month  (86,017)
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Resource Type 

1. Patents  (2,184,100)
2. Articles  (57)
3. Books  (37)
4. Conference Proceedings  (2)
5. Thesises (postgraduate)  (2)
6. Book Chapters  (1)
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Subject 

1. Physics  (2,184,123)
2. Testing  (2,184,100)
3. Measuring Magnetic Variables  (1,480,650)
4. Measuring Electric Variables  (1,480,650)
5. Electricity  (588,467)
6. Tariff Metering Apparatus  (521,757)
7. Arrangements For Measuring Two Or More Variables Not Coveredin A Single Other Subclass  (521,757)
8. Measuring Not Specially Adapted For A Specific Variable  (521,757)
9. Measuring Or Testing Not Otherwise Provided For  (521,757)
10. Basic Electric Elements  (275,137)
11. Transporting  (185,295)
12. Performing Operations  (185,295)
13. Counting  (175,580)
14. Calculating  (175,579)
15. Computing  (175,579)
16. Conversion Or Distribution Of Electric Power  (170,560)
17. Generation  (170,560)
18. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (157,866)
19. Controlling  (152,376)
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Databases 

1. esp@cenet  (2,184,100)
2. ProQuest Central  (37)
3. DOAJ Directory of Open Access Journals  (30)
4. ROAD: Directory of Open Access Scholarly Resources  (26)
5. GFMER Free Medical Journals  (14)
6. PubMed Central  (13)
7. Ebook Central - Academic Complete  (10)
8. Springer Nature OA/Free Journals  (10)
9. MEDLINE  (7)
10. DOAB: Directory of Open Access Books  (5)
11. ProQuest One Psychology  (5)
12. SciELO  (3)
13. SpringerLink Fully Open Access Books  (3)
14. OAPEN  (3)
15. Trove Australian Thesis (Full Text - Open Access)  (2)
16. Wiley-Blackwell Open Access Titles  (2)
17. Education Resources Information Center (ERIC)  (2)
18. Coronavirus Research Database  (2)
19. Journals@Ovid Open Access Journal Collection Rolling  (1)
20. SAGE Open Access Journals  (1)
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Language 

1. English  (1,816,992)
2. Chinese  (680,132)
3. French  (255,622)
4. German  (249,212)
5. Korean  (86,711)
6. Japanese  (65,657)
7. Russian  (27,910)
8. Spanish  (15,718)
9. Portuguese  (8,156)
10. Italian  (7,120)
11. Swedish  (5,583)
12. Polish  (4,078)
13. Finnish  (3,369)
14. Dutch  (2,928)
15. Danish  (2,821)
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. Acta Technologica Agriculturae  (1)
3. Advances In Electrical And Electronic Engineering  (1)
4. Amino Acids  (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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