TY  - BOOK
AU  - Koff,Richard M.
AU  - Rooman,Richard E.
TI  - How does it work?
AV  - TJ147 .K6 1968
U1  - 621.9 
PY  - 1968///, c1961]
CY  - [New York]
PB  - New American Library
KW  - Machinery
KW  - Tools
KW  - Electric apparatus and appliances
N1  - Includes index
UR  - http://www.archive.org/details/howdoesitwork00koffrich
UR  - http://www.openlibrary.org/books/OL24209939M
ER  -