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FIRST AID FOR SCIENCE TEACHERS.
- Published in:
- Science Education, 1950, v. 34, n. 1, p. 55, doi. 10.1002/sce.3730340113
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- Publication type:
- Article
A COLOR TEST THAT FAILED.
- Published in:
- Science Education, 1948, v. 32, n. 1, p. 36, doi. 10.1002/sce.3730320110
- By:
- Publication type:
- Article