Science in elementary education - Gega, Peter C.; Gega, Peter C. Concepts and experiences in elementary school science. 1994.; Gega, Peter C. How to teach elementary school science. 1994. (New York Macmillan, 1994)
Also published in two volumes: Concepts and experiences in elementary school science. 2nd ed. c1994. and How to teach elementary school science. 2nd ed. c1994.
Keywords: Science -- Study and teaching (Elementary).