Proceedings of the National Academy of Sciences of the United States of America [Electronic Resource.] (Record no. 49448)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 00566nas a2200133Ia 4500 |
| 022 ## - INTERNATIONAL STANDARD SERIAL NUMBER | |
| ISSN | Online : 1091-6490 |
| 245 ## - TITLE STATEMENT | |
| Title | Proceedings of the National Academy of Sciences of the United States of America [Electronic Resource.] |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | National Academy of Sciences |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Biological Sciences ; General Science ; Science & Mathematics |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Physics |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://www.pnas.org/ |
| 901 ## - LOCAL DATA ELEMENT A, LDA (RLIN) | |
| Impact Factor for 2010 | 2010 : 9.771 |
| Impact Factor for 2011 | 2011 : 9.681 |
| Impact Factor for 2012 | 2012 : 9.737 |
| Impact Factor for 2013 | 2013 : 9.809 |
| Impact Factor for 2015 | 2015 : 9.423 |
| Impact Factor for 2016 | 2016 : 9.661 |
| mpact Factor for 2017 | 2017 : N/A |
| Impact Factor for 2021 (Ex. 2021 : 2.5) | 2022 : 1.1 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | ELECTRONIC JOURNALS |
| Classification part | Physics |
No items available.