TY  - BOOK
AU  - Woodbury,Robert S.
TI  - History of the gear-cutting machine : : a historical study in geome try and machines / 
U1  - 621.944 WOO 
PY  - 1958///
CY  - Cambridge : 
PB  - Technology Press, Massachusetts Institute of Technolo gy , 
KW  - Gear-cutting machines
N1  -  Includes bibliographical references : p.127-130
ER  -