TY  - BOOK
AU  - Richards,Bryant N.
TI  - Introduction to the soil ecosystem
SN  - 0582441307 :
AV  - QH541.5.S6 R52
U1  - 574.5/26 
PY  - 1974///
CY  - Harlow [Eng.], New York
PB  - Longman
KW  - Soil ecology
N1  - Includes bibliographies and index
ER  -