Plant and animal partnership
Parker, Bertha Morris.
Plant and animal partnership by Bertha Morris Parker ; illustrations by Arnold W. Ryan. - 1953 ed. - Evanston, Ill. Row, Peterson 1953, c1944. - 35 p. ill. 23 cm. - The Basic science education series .
"Intermediate." Row-Peterson unitext.
Science--Study and teaching (Elementary)
Plant and animal partnership by Bertha Morris Parker ; illustrations by Arnold W. Ryan. - 1953 ed. - Evanston, Ill. Row, Peterson 1953, c1944. - 35 p. ill. 23 cm. - The Basic science education series .
"Intermediate." Row-Peterson unitext.
Science--Study and teaching (Elementary)