Earth System Science Project: An inexpensive model of a pond ecosystem demonstrates the interaction between the geosphere, hydrosphere, atmosphere, and biosphere

Autor:	Rutherford, Sandra, Coffman, Margaret
Zdroj:	The Science Teacher, 2004 Sep 01. 71(7), 30-35.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/24155509