TY  - BOOK
AU  - Indian standards institutio, ISI .
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Test code for mould board ploughs,IS:6288-1971 / 
U1  - 631.312 
PY  - 1972///
CY  -  : 
PB  - ISI , 
ER  -