TY  - BOOK
AU  - Laton Anita Duncan
AU  -  Powers Samuel Ralph
TI  - New directions in science teaching: A report of a cooperative project in seventeen secondary schools with the Bureau of Educational Research in Science Teachers College, Columbia University
PY  - 1949///
CY  - New York, USA
PB  - McGraw Hill Book Company Inc
KW  - Science teaching
ER  -