TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Specification for furrow opener for seed- cum -fertilizer drills ,part1 shovel type,IS:10778-1983 / 
U1  - 631.331 
PY  - 1983///
CY  -  : 
PB  - ISI , 
ER  -