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AuthorSouchon, Christian (5)Alonso Millán, Jesús (3)Barrios Montenegro, Juan Carlos (3)Ahijado Hormigos, Cristina (2)Albarracín Fernández, Concepción (2)... moreSubject
educación ambiental (93)
protección del medio ambiente (34)secundaria primer ciclo (29)estudio del medio ambiente (21)enseñanza primaria (18)... moreDate issue1994 (16)1996 (14)1995 (13)1997 (13)1993 (12)