Discovering the physical world /
Yardley, Alice.
Discovering the physical world / Alice Yardley. - New York : Citation Press, 1970. - 144 p. : 19 cm.
Includes index.
0590073273
Science--Study and teaching (Elementary).
Mathematics--Study and teaching (Elementary).
155.91 YAR
Discovering the physical world / Alice Yardley. - New York : Citation Press, 1970. - 144 p. : 19 cm.
Includes index.
0590073273
Science--Study and teaching (Elementary).
Mathematics--Study and teaching (Elementary).
155.91 YAR