Hurd, P. D. (1969). New directions in teaching secondary school science. R and Mc Nally.
Chicago Edition CitationHurd, Paul Dehart. New Directions in Teaching Secondary School Science. Chicago: R and Mc Nally, 1969.
MLA Edition CitationHurd, Paul Dehart. New Directions in Teaching Secondary School Science. R and Mc Nally, 1969.
Warning: These citations may not always be 100% accurate.