TY  - BOOK
AU  - Hilgard, E.W.
TI  - Soils: their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions
U1  - 631.4 21st ed.
PY  - 1906///
CY  - London
PB  - Macmilan
KW  - Soil formation
KW  - Soils-Composition
N1  - 553-93 includes index
ER  -