TY  - BOOK
AU  - Singer,Maxine
AU  - Tuomi,Jan
ED  - Center for Science, Mathematics, and Engineering Education.
TI  - Selecting instructional materials: a guide for K-12 science 
SN  - 030906533X
AV  - LB 1585.3 .C45 1952
PY  - 1952///
CY  - Washington, D.C.
PB  - National Academy Press
KW  - Science
KW  - Study and teaching
KW  - United States
KW  - Aids and devices
KW  - Purchasing
N1  - Includes bibliographical references (p. 113-116) and index
ER  -