TY  - BOOK
AU  -  Burghardt,Henry D.
TI  -  Machine tool operation ... 
U1  -  621.75 
PY  - 1937///-41]
CY  -  New York and London, 
PB  -  McGraw-Hill book company, inc. 
KW  -  Machine-shop practice
KW  -  Lathes
ER  -