Trees
Parker, Bertha Morris.
Trees by Bertha Morris Parker ; checked for scientific accuracy by Wilbur R. Mattoon ; Kodachrome not credited by R. D. Bezucha ; drawings by Olga Kucera ; Kodachrome cover by Gay Lord. - Evanston, Ill. Row, Peterson 1955 1947. - 35 p. ill. - Basic science education series. .
"Intermediate". Row Peterson unitext.
Science--Study and teaching (Elementary)
Trees by Bertha Morris Parker ; checked for scientific accuracy by Wilbur R. Mattoon ; Kodachrome not credited by R. D. Bezucha ; drawings by Olga Kucera ; Kodachrome cover by Gay Lord. - Evanston, Ill. Row, Peterson 1955 1947. - 35 p. ill. - Basic science education series. .
"Intermediate". Row Peterson unitext.
Science--Study and teaching (Elementary)