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- 40028650 contributor B970214.
- 40028650 created "[1940]".
- 40028650 date "1940".
- 40028650 date "[1940]".
- 40028650 dateCopyrighted "[1940]".
- 40028650 extent "30 p.".
- 40028650 isPartOf "[Pennsylvania State College] The Pennsylvania State College studies, no. 5".
- 40028650 issued "1940".
- 40028650 issued "[1940]".
- 40028650 language "eng".
- 40028650 publisher "State College, Pa., The Pennsylvania State College".
- 40028650 subject "535.2".
- 40028650 subject "Glass.".
- 40028650 subject "Photochemistry.".
- 40028650 subject "QC912 .L35".
- 40028650 subject "Radiation.".
- 40028650 title "A method of measuring radiation of short wave length by means of a photochemical reaction in a special glass, by Helmut Landsberg ...".
- 40028650 type "text".