TY  - BOOK
AU  - Clevenger,William
TI  - Why the sky is blue and other wonders of the earth
SN  - 0792457463
U1  - 551.566 
PY  - 1992///
CY  - New York
PB  - Mallard Press
KW  - Earth sciences
N1  - Primary; 500-599; 550
ER  -