Détail du congrès:
Congrès: The proceedings of a national conference on soil erosion, May 24-26 1976, Purdue University, West Lafayette, Indiana (1976; USA) (1976) |
Congrès: The proceedings of a national conference on soil erosion, May 24-26 1976, Purdue University, West Lafayette, Indiana (1976; USA) (1976) |