TY  - BOOK
AU  - Sund,Robert B.
AU  - Tillery,Bill W.
AU  - Trowbridge,Leslie W.
TI  - Investigate and discover: elementary science lessons
AV  - LB1585 .S88
U1  - 372.3/5/044 
PY  - 1975///]
CY  - Boston
PB  - Allyn and Bacon
KW  - Science
KW  - Study and teaching (Elementary)
KW  - Local
ER  -