TY  - BOOK
AU  - Freitas, L. M. M. De and others,
TI  - Field Studies on Fertility Problems of two Braziliam Campos Cerrados 1958-59
U1  - 631.05 
PY  - 1960///
CY  - New York
PB  - IBEC Research
KW  - Techniques, equipment & materials
ER  -