TY  - BOOK
AU  - "Philipson, J., Ed."
TI  - "Methods of study in quantitative soil ecology :population, production and energhy flow (IBP Handbook no.19)"
U1  - 631.46:577.4 
PY  - 0000///Oxford
CY  - 1971
PB  - Blackwell Sci. Pub.
ER  -