Medel, P. C. A conceptual framework for environmental education adapted to the Philippine environment.
Lua i Stíl Chicago (17ú heag.)Medel, Paz Concepcion. A Conceptual Framework for Environmental Education Adapted to the Philippine Environment.
Lua MLA (9ú heag.)Medel, Paz Concepcion. A Conceptual Framework for Environmental Education Adapted to the Philippine Environment.
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