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1.
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Our earth : saving water / Peggy Hock.
Autorët: Hock, Peggy. Tipi i materialit:  LibërBotuar: New York : Children's press of Scholastic, 2009
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2.
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Our Earth : helping out / Peggy Hock.
Autorët: Hock, Peggy. Tipi i materialit: LibërBotuar: New York : Children's press of Scholastic, 2009
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3.
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Our Earth : clean energy / Peggy Hock.
Autorët: Hock, Peggy. Tipi i materialit: LibërBotuar: New York : Children's press of Scholastic, 2009
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4.
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Our Earth : making less trash / Peggy Hock.
Autorët: Hock, Peggy. Tipi i materialit: LibërBotuar: New York : Children's press of Scholastic, 2009
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5.
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Our Earth : keeping it clean / Peggy Hock.
Autorët: Hock, Peggy. Tipi i materialit: LibërBotuar: New York : Children's press of Scholastic, 2009
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6.
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Our Earth : saving energy / Peggy Hock.
Autorët: Hock, Peggy. Tipi i materialit: LibërBotuar: New York : Children's press of Scholastic, 2009
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