TY  - BOOK
TI  - Proceedings of the fourth international soil classification workshop[held in]Rwanda on 2-12 June, 1981: part 1: papres
PY  - 1983///
CY  - Brussels
PB  - ABOS-AGCD
KW  - BI-BuBU
KW  - Sol
KW  - Classification
ER  -