TY  - BOOK
ED  - Phillipson, J.
TI  - Methods of study in soil eclogy
T2  - Ecology and conxservation ; no. 2
U1  - 581.5 
PY  - 1970///
CY  - Paris
PB  - Unesc
N1  - Proceedings of the Paris symposium organised by Unesco and the International Biological Programme
ER  -