00616cam a2200217 a 4500 ocm10378339 1999080500000000 871006s1984 ohu 001 0 eng d 9780675201186 0675201187 sab87075779 eng 372.35 19 Harlan, Jean Durgin. Science experiences for the early childhood years / Jean Harlan. 3rd ed. Columbus, Ohio : Merrill, 1984. x, 253 p. Includes bibliographies and index. Science Study and teaching (Elementary) 506 506