Détail du congrès:
Congrès: Proceedings of the second meeting of the ISSS working group on soil information system (1977/05/30-1977/06/04; Sofia, BGR) (1977/05/30-1977/06/04) |
Congrès: Proceedings of the second meeting of the ISSS working group on soil information system (1977/05/30-1977/06/04; Sofia, BGR) (1977/05/30-1977/06/04) |