TY  - BOOK
AU  - Ison, R.L.
AU  - Pearson, C.J.
TI  - Agronomy of grassland systems
SN  - 0521310091
U1  - 633.2 21st ed.
PY  - 1987///
CY  - Cambrdige
PB  - Cambridge University Press
KW  - Grasses
KW  - Pastures
KW  - Seed production
ER  -