TY  - BOOK
AU  - Blough,Glenn Orlando
AU  - Schwartz,Julius
TI  - Elementary school science and how to teach it
SN  - 0030313120 :
AV  - LB1585.3 .B5 1990
PY  - 1990///
CY  - Fort Worth
PB  - Holt, Rinehart, and Winston
KW  - Science
KW  - United States
N1  - Includes index; Bibliography: p. 641-644
ER  -