000 00572nam a2200169Ia 4500
008 190327s9999||||xx |||||||||||||| ||und||
040 _aNITIL
_cNITIL
082 _221st
_a507
_bH473M
100 _aHeiss, Elwood D
245 0 _aModern Science teaching
_ba revision of modern methods and materials for teaching Science
_cElwood D Heiss
260 _aNew York
_bMacmillan
_c1950
300 _aviii, 462p.
650 _aScience-Study and teaching; Science-Study and teaching-Aids and devices
700 _aHoffman, Charles W
700 _aObourn, Ellsworth S
942 _cBKS
999 _c62403
_d62403