TY  - BOOK
AU  - Allen,Donald S.
AU  - Ordway,Richard J.
TI  - Physical science,
AV  - Q161 .A38
U1  - 500 
PY  - 1960///]
CY  - Princeton, N.J.
PB  - Van Nostrand
KW  - Science
UR  - http://www.archive.org/details/physicalscienc00alle
UR  - http://www.openlibrary.org/books/OL5798356M
ER  -