TY  - BOOK
AU  - Nelson,Pearl Astrid
TI  - Elementary school science activities
U1  - 372.3 
PY  - 1968///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Science
KW  - Study and teaching (Elementary)
N1  - Includes bibliographical references and index
ER  -