Manual for outdoor laboratories : the development and use of schoolgrounds as outdoor laboratories for teaching science and conservation / Richard L. Weaver, editor.
Material type:
TextPublication details: Danville, Ill. : Interstate, 1959.Description: 81 pages : illustrations ; 26 cmContent type: - text
- unmediated
- volume
- 574.07 N213m
- QH51 .M29
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