Oxford junior encyclopaedia / edited by Laura E. Salt and Robert Sinclair ; Illustrated by Helen Mary Petter. - 2nd ed. - London : Oxford University Press, 1964. - Vols. : ill. ; 25 cm. V. 13- Index and ready reference volume ; 338 338 Subjects--Topical Terms: Children's encyclopedias --Reference volume. Dewey Class. No.: 032 / O2