TY  - BOOK
AU  - Jean,Frank Covert
AU  - Harrah,Ezra Clarence
AU  - Herman,Fred Louis
AU  - Powers,Samuel Ralph
TI  - Man and his physical universe
AV  - Q159 .J43 1949
PY  - 1949///
CY  - Boston, New York
PB  - Ginn and co.
KW  - Science
ER  -