World soil resources reports.
- Rome : FAO, 1989-
- vols.
Nos. 64, 74, 79, 81, 82, 83, 84, 85, 86, 87, 89, 91, 92, 93, 94, 95, 96,
0532-0488
Soils--Classification.
Soils--Maps.
Nos. 64, 74, 79, 81, 82, 83, 84, 85, 86, 87, 89, 91, 92, 93, 94, 95, 96,
0532-0488
Soils--Classification.
Soils--Maps.