TY  - BOOK
AU  - Skilling,William T
TI  - Tours through the world of science : a general science text book
U1  - 500 SKI 
PY  - 1941///.
CY  - New York : 
PB  - Mc Graw-Hill, 
KW  - Chemistry
KW  - Science
KW  - Space science
ER  -