TY  - BOOK
AU  - Larsen, E.
AU  - Saleha Begum, Tr.
TI  - History of inventions (Urdu)
U1  - 94:001.89 L22H 
PY  - 1989///
CY  - New Delhi
PB  - Taraqqui Urdu Bureau
KW  - Inventions--History
ER  -