TY  - BOOK
ED  -  Botswana. 
TI  -  Botswana handbook of seed certification standards and rules, May 199 4
SN  -  9991210970
PY  - 1994///]
CY  -  Gaborone, Botswana : 
PB  -  Republic of Botswana, Dept. of Agricultural Research, 
ER  -