TY  - BOOK
AU  - Hauser, G.F.
TI  - Soil fertility investigations on farmer' s fields
T2  - FAO Soils Bulletin, 11
U1  - 631.45.001.5(047) L0 
PY  - 1970///
CY  - Rome
PB  - FAO
KW  - G.F. Hauser
KW  - Soil fertility research
ER  -