Indian standard range of preferred safe working loads for cranes, lifting appliances and related excavator equipment 
Indian Standards Institution 
 - New Delhi  Indian Standards Institution  1972 
 - 5p. 
<br/><br/> IS 6511 : 1972 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Cranes-Standards<br/> Standards <br/>NASA Thesaurus 
<br/><br/><label>Universal Decimal Class. No.: </label>083.7:621.86/87  / ISI