00338nam a2200097Ia 4500008004100000082003300041245009700074260002500171300000900196650003500205140224s9999    xx            000 0 und d  aS 631.372:629.114.2.004.5 L3  aIndian standard code of practice for preventive maintenance of agricultural wheeled tractor.  aNew DelhibISIc1973  a15p.  aTractor wheels-standards-India