共 50 条
- [1] UNITED-STATES-OF-AMERICA NATIONAL BIBLIOGRAPHICAL AND ABSTRACTING SERVICES AND RELATED ACTIVITIES IN 1977 [J]. RQ, 1978, 18 (02): : 117 - 146
- [2] NATIONAL REPORT OF THE UNITED-STATES-OF-AMERICA [J]. PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 1980, 46 (12): : 1525 - 1530
- [4] NATIONAL ATLAS OF UNITED-STATES-OF-AMERICA - GERLACH,AC [J]. SPECIAL LIBRARIES, 1972, 63 (03) : 158 - 160
- [5] NATIONAL ATLAS OF UNITED-STATES-OF-AMERICA - GERLACH,AC [J]. GEOGRAPHICAL REVIEW, 1972, 62 (02) : 282 - 286