El Derroche De La Energia/the Waste Of Energy (Operacion Tierra)
Publisher: Sigmar
Published: April 1998
Language: spa
Format: Paperback
Number of pages: 48
ISBN-13: 9789501109801
Subjects: Science & Nature - Environmental Conservation & Protection; Juvenile Nonfiction; Children's Books/Ages 9-12 Nonfiction; Spanish: Grades 4-7