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Abstract

Question: Wood is opaque to light but is easily penetrated by X rays. The latter, however, are stopped by some kinds of clear glass. Does this not show that light and X rays are of different nature?

Is it desirable to study the theory of evolution in connection with a high school course in Botany? If so, to what extent?

What is the purpose of crop rotation?

Publication Date

January 1931

Journal Title

Science Bulletin

Volume

3

Issue

5

First Page

5

Last Page

6

Copyright

©1931 by Iowa State Teachers College

Language

en

File Format

application/pdf

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