Proceedings of the fourth international soil classification workshop[held in]Rwanda on 2-12 June, 1981 : part 1: papres
/ ed. F.H;beinroth, H.Neel, H.Eswaran
. - Brussels : ABOS-AGCD, 1983
. - VII-518 p. : ill.,couv.ill. ; 29 cm.
- Agricultural editions 4 .
don
631.44
don
631.44