TY  - BOOK
AU  - UTGARD RUSSELL O.
TI  - SOURCEBOOK FOR EARTH SCIENCES AND ASTRONOMY
AV  - REF GB.59.6.U84 1972 
PY  - 1972///
CY  - NEWYORK
PB  - MACMILLAN COMPANY
KW  - Earth sciences--Study and teaching (Secondary) Astronomy--Study and teaching (Secondary)
ER  -