TY  - BOOK
AU  - pearson, C.J
AU  - Ison, R.L
TI  - Agronomy of grassland systems 
SN  - 0521324483
U1  - 633.2 PEA 
PY  - 1987///
CY  - New york 
PB  - Cambridge university 
KW  - grasses range management
ER  -