joven investigador

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joveninvestigador

Vida acu?tica en agua dulce

  • Jennings, Terry J
1990
An introduction to the plant and animal life of ponds which includes study questions, activities, and experiments.

Rocas y suelos

  • Jennings, Terry J
1992
An introduction to different kinds of rocks and soils describing their characteristics, location, and uses. Includes study questions, activities, and experiments.

Aire

  • Jennings, Terry
1982
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