TY  - BOOK
AU  - Singhal,N.C.(ed)
TI  - Hybrid seed production in field crops: principles and practices 
SN  - 8127207993
PY  - 2003///
CY  - Ludhiana
PB  - Kalayani
KW  - Field crop
KW  - Breeding
N1  - Includes bibliographical references and index
ER  -