TY  - BOOK
AU  - Gray,Dwight E.
AU  - Coutts,John Wallace
TI  - Man and his physical world
AV  - Q160 .G7 1958
U1  - 500 
PY  - 1958///]
CY  - Princeton, N.J.
PB  - Van Nostrand
KW  - Science
KW  - Local
N1  - Includes bibliography
ER  -