LIEBERMANN, H. 1971. Personal Communication.
PETERSON, R. T.1947. Field guide to the birds. Boston: Houghton Mifflin Company.
Field guide to the birds
ROBBINS, C. S., BRUNN, B., and ZIM, H. S.1966. A guide to field identification of birds of North America. New York: Gol- den Press.
A guide to field identification of birds of North America
COHEN, M. R. and HOLLINGSWORTH, D. K.1973. Environ- mental information versus environmental attitudes. The Journal of Environmental Education.5 (Winter):5.
The Journal of Environmental Education
JERNIGAN, H. D. 1974. A comparative study of five units in high school biology. Unpublished dissertation. University of Kansas, Lawrence.
OSGOOD, C. E., SUCI, G. J. and TANNENBAUM, P. H.1967. The measurement of meaning. Urbana: University of Illinois Press.
The measurement of meaning
VAN MATRE, S.1972. Acclimatization, American Camping Association Bradford Woods, Indiana, Martinsville.
WIERSCH, L. S. 1975. The effects of three instructional units on the attitudes of high school students to the environment. Unpublished thesis, University of Kansas, Lawrence.
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