Ecosystems
Subtitle: Teacher's guide
By: Chester A. Lawson ... [et al.].
Series: SCIIS. Life/earth science sequence -- lev.6; SCIIS. Life/earth science sequence -- lev.6
Publisher: Rand McNally & Co.
Published: 1978
Place of publication: Chicago
Language: eng
Number of pages: 116
Subjects: Ecology; Biological systems; Juvenile literature; Study and teaching (Elementary)
Notes: Accompanied by Student manual [std.man.].