![Introduction to Metallography. By Paul Goerens, Docent in Physical Metallurgy at the Royal Technical High School, Aachen. Translated by Fred Ibbotson, Lecturer in Metallurgy, The University, Sheffield. London, Longmans, Green and Co. Introduction to Metallography. By Paul Goerens, Docent in Physical Metallurgy at the Royal Technical High School, Aachen. Translated by Fred Ibbotson, Lecturer in Metallurgy, The University, Sheffield. London, Longmans, Green and Co.](https://www.science.org/cms/10.1126/science.28.719.489/asset/51ab062c-ad6a-4c38-b6ae-8edae71271c5/assets/science.28.719.489.fp.png)
Introduction to Metallography. By Paul Goerens, Docent in Physical Metallurgy at the Royal Technical High School, Aachen. Translated by Fred Ibbotson, Lecturer in Metallurgy, The University, Sheffield. London, Longmans, Green and Co.
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