TY  - BOOK
AU  - W. L. Sumner
TI  - Teaching of Science
U1  - 375.5 
PY  - 1947///
CY  - Oxford
PB  - Basil Blackwell
N1  - W. L. Sumner: Teaching of Science.  (3rd Edition.)  Oxford.  Basil Blackwell, 1947.--(375.5SUM)
ER  -