ENVIRONMENTAL QUALITY AND LAND PRODUCTIVITY: A COMPARISON OF THE AGRICULTURAL LAND BASE OF THE USSR AND NORTH AMERICA
- 1 March 1968
- journal article
- Published by Wiley in Canadian Geographies / Géographies canadiennes
- Vol. 12 (1), 1-14
- https://doi.org/10.1111/j.1541-0064.1968.tb00555.x