共 50 条
- [1] UNITED-STATES PATENT REQUIREMENTS IN VITRO-JOURNAL OF THE TISSUE CULTURE ASSOCIATION, 1981, 17 (12): : 1084 - 1085
- [5] EXTENT OF LIFETIME EMPLOYMENT OF WOMEN IN UNITED-STATES INDUSTRIAL GERONTOLOGY, 1976, 3 (01): : 25 - 36
- [6] AGGREGATE AND LIFETIME CONTRACEPTIVE FAILURE IN THE UNITED-STATES FAMILY PLANNING PERSPECTIVES, 1989, 21 (05): : 224 - 226
- [9] DIESEL EMISSIONS REQUIREMENTS IN THE UNITED-STATES AND EUROPE KEMISK TIDSKRIFT, 1988, 100 (08): : 8 - 8