Machines,
Parker, Bertha Morris.
Machines, by Bertha Morris Parker...Checked for scientific accuracy by Clifford Holley. - Evanston, Ill., New York city [etc.] Row, Peterson and company, c1944. - 35 [1] p. illus. - The Basic science education series .
"Illustrations by George Sargent."--p. [36]
Machinery--Juvenile literature.
621.8
Machines, by Bertha Morris Parker...Checked for scientific accuracy by Clifford Holley. - Evanston, Ill., New York city [etc.] Row, Peterson and company, c1944. - 35 [1] p. illus. - The Basic science education series .
"Illustrations by George Sargent."--p. [36]
Machinery--Juvenile literature.
621.8