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Effectiveness of a Conservation Television Program, Or, Results of Testing Three Seventh Grade Classes on the Content of an Eight Weeks Extension Service Television Course on Conservation
Eileen Louise Mair
其他書名
A Thesis Submitted in Partial Fulfillment ... for the Degree of Master of Science in Conservation
出版University of Michigan, 1953
URLhttp://books.google.com.hk/books?id=qIJ-fQgK02AC&hl=&source=gbs_api