Kenwrick, Evelyn Emily, 1886- Number in the nursery and infant school / by Evelyn E. Kenwrick. ; With a foreword by P. B. Ballard. - London : Routledge & Kegan Paul ltd, 1937 [Impression 1949] - xi, 251 p. : ill. ; 19 cm. Subjects--Topical Terms: Arithmetic--Study and teaching. Dewey Class. No.: 372.7 / KEN 1949