Soil quality in semiarid agriculture proceedings of an international conference = Qualité du sol en agriculture semi-aride : procédés d'une conference internationale

John W. B Stewart; Canadian International Development Agency; Global Agricultural Technology Exposition (1st 1989 University of Saskatchewan)

Saskatoon, Canada Saskatchewan Institute of Pedology, University of Saskatchewan 1990-

Localização: ESALQ - Biblioteca Central    (631.4 S849s v.2 67169 )(Acessar)