Griffiths, Rachel, active 2009-2010, Why do leaves change colour? : and other questions about plants / Rachel Griffiths. - 16 pages : illustrations ; 21 cm. - Why is it so science? Cambridge young readers. Level 6 . - Cambridge young readers. Level 6. . 1977 ISBN: 9780521137157 Subjects--Topical Terms: Plants--Miscellanea--Juvenile literature. Dewey Class. No.: 580