TY  - BOOK
AU  - Trafton, Gilbert H. 
TI  - The teaching of science in the elementary school
SN  - 9781103940271
U1  - 507 TRA 
CY  - Boston : 	
PB  - Houghton Mifflin Company, 
KW  - 	 Science
KW  - Study and teaching
N1  - Includes bibliographical references and index
ER  -