TY  - GEN
AU  - Singh, Gurdev
TI  - Seed replacement rates: performance and problems 
SN  - 81-204-0850-0 :
U1  - 582 
PY  - 1994///
CY  - New Delhi
PB  - Oxford & IBH Publishing
KW  - SPERMATOPHYTA
N1  - Includes references
ER  -