61
Soil classification.
Book
...GNA - Bodenkunde...
62
Constituents and properties of soils /
Book
...GNA - Bodenkunde...
63
The Chemistry of soil processes /
Book
...GNA - Bodenkunde...
64
Applications of soil physics /
Book
...GNA - Bodenkunde...
65
Soils : Their formation, classification and distribution.
Book
...GNA - Bodenkunde...
66
Applied soil trace elements /
Book
...GNA - Bodenkunde...
67
Soil organic matter /
Book
...GNA - Bodenkunde...