TY  - BOOK
AU  - Polak, Peter
TI  - Engineering Design Elements 
SN  - 007072499
U1  - 620.0042 
PY  - 1991///
CY  - London : 
PB  - McGraw-Hill Book, 
KW  - Engineering Design
KW  - Mechanical Engineering
N1  - NY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-0707249-9.pdf
ER  -