TY  - BOOK
AU  - Owler,L.W.J.
TI  - Wheldons Costing simplified
U1  - 657.42 
PY  - 1984///
CY  - London
PB  - English language book society
KW  - Wheldons 
KW  - Costing
KW  - কমার্স
N1  - Index
ER  -