TY  - BOOK
AU  - DRUGGE, N. L. et al.
AU  - CRICK, G, BAWDEN, L. P., MACVICAR, R. S., PETRAK, J. A. and GRASDAL, A. M.
TI  - Developing Science Concepts in the Laboratory
U1  - 500  DRU 
PY  - 1968///,
CY  - Canada
PB  - Prentice- Hall of Canada, Ltd.
KW  - Science
N1  - Includes bibliographical references
ER  -