Ecosystems
Subtitle: teacher's guide
By: Robert C. Knott, Herbert D. Thier
Contributors: Thier, Herbert D; Delta Education (Firm); Science Curriculum Improvement Study
Series: SCIS 3
Publisher: Delta Education
Published: 1993
Place of publication: Hudson, NH
Language: eng
Subjects: Biotic communities -- Study and teaching (Elementary); Science -- Study and teaching (Elementary); Ecology -- Study and teaching (Elementary)
Notes: "SCIS 3 is a major revision of the Science Curriculum Improvement Study"--T.p. verso

"Level 6."