Rahn, Joan Elma.
The metric system / Joan Elma Rahn ; illustrated by Ginny Linville Winter. - New York : Atheneum, 1976. - 79 p. : ill.
Explains the principles and uses of the metric system.
0689305109
75029445
Metric system.
389
The metric system / Joan Elma Rahn ; illustrated by Ginny Linville Winter. - New York : Atheneum, 1976. - 79 p. : ill.
Explains the principles and uses of the metric system.
0689305109
75029445
Metric system.
389