TY  - BOOK
AU  - O'Brien, Robert, 1911 -
TI  - Machines: Robert O'Brien and the editors of Time - Life Books
AV  - TJ147 .O2 1972
PY  - 1972///
CY  - N.Y.
PB  - Time life Books
KW  - Machinery
N1  - Includes bibliography (p. 196) and index
ER  -