发文地区与机构
近年国家 / 地区发文量统计
| 国家 / 地区 | 发文量 |
|---|---|
| USA | 32 |
| CHINA MAINLAND | 10 |
| New Zealand | 8 |
| Australia | 6 |
| England | 6 |
| GERMANY (FED REP GER) | 6 |
| Canada | 5 |
| South Korea | 5 |
| France | 4 |
| Taiwan | 2 |
近年机构发文量统计
| 机构 | 发文量 |
|---|---|
| HARVARD UNIVERSITY | 5 |
| UNIVERSITY OF OTAGO | 5 |
| AUSTRALIAN NATIONAL UNIVERSITY | 3 |
| MICROFOSSIL RES LTD | 3 |
| UNIVERSITY OF GUAM | 3 |
| UNIVERSITY OF HAWAII SYSTEM | 3 |
| UNIVERSITY OF MUNICH | 3 |
| UNIVERSITY OF WASHINGTON | 3 |
| CENTRE NATIONAL DE LA RECHERCHE SCIENTI... | 2 |
| CHINESE ACADEMY OF SOCIAL SCIENCES | 2 |