TY  - BOOK
ED  - Indian Standards Institution
TI  - Indian standard range of preferred safe working loads for cranes, lifting appliances and related excavator equipment
PY  - 1972///
CY  - New Delhi
PB  - Indian Standards Institution
KW  -  Cranes-Standards
KW  -  Standards 
KW  - NASA Thesaurus 
N1  - IS 6511 : 1972
ER  -