River cutters.
By: Jefferey S. Kaufmann, Robert C. Knott, Lincoln Bergman.
Contributors: Bergman, Lincoln, educator.; Knott, Robert C.; GEMS (Project); Lawrence Hall of Science.
Series: GEMS : Great explorations in math and science
Publisher: Great Explorations in Math and Science (GEMS), Lawrence Hall of Science
Published: 1989
Place of publication: Berkeley, Calif
Language: eng
Number of pages: 66
Subjects: Rivers -- Experiments.; Soil erosion -- Experiments.
Notes: Grades 6-9.

For related kit, see: CR/500/.G323Ri/1999

CR