TY  - BOOK
ED  - United States.
TI  - Basic machines and how they work
SN  - 0486217094
AV  - TJ148 U55 1971
U1  - 621.8 
PY  - 1971///]
CY  - New York
PB  - Dover Publications
KW  - Mechanical engineering
KW  - Machinery
ER  -