共 50 条
- [21] A NEW MAP OF THE DAIRY AREAS OF THE UNITED STATES [J]. ECONOMIC GEOGRAPHY, 1935, 11 (04) : 347 - 355
- [24] Mine map repositories in Pennsylvania and the United States [J]. PROCEEDINGS OF THE 33RD MEETING OF THE GEOSCIENCE INFORMATION SOCIETY: ACCRETING THE CONTINENT'S COLLECTIONS, 1999, 29 : 75 - 77
- [30] MAP IN THE UNITED-STATES - EMERGING OR SUBMERGING [J]. I&CS-CONTROL TECHNOLOGY FOR ENGINEERS AND ENGINEERING MANAGEMENT, 1989, 62 (11): : 33 - 35