Spilsbury, Louise Caring for our world / Louise Spilsbury. - Essex : Cambridge, 2009. - 16 p. : colour pictures ; 21 cm. - Pearson Baccalaureate PYP Readers. . ISBN: 9780435996130 Subjects--Topical Terms: Natural resources.--Environment.--Çevre.--Doğal Kaynaklar. Dewey Class. No.: 333 SPI/C