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- 27021912 contributor B704723.
- 27021912 created "1927.".
- 27021912 date "1927".
- 27021912 date "1927.".
- 27021912 dateCopyrighted "1927.".
- 27021912 description "Thesis (PH. D.)--Columbia University, 1927.".
- 27021912 extent "36 p.".
- 27021912 issued "1927".
- 27021912 issued "1927.".
- 27021912 language "eng".
- 27021912 subject "Coal-tar products.".
- 27021912 subject "Sodium hydroxide.".
- 27021912 subject "TP953 .C5 1927".
- 27021912 title "Practical limitations in the use of sodium hydroxide solutions for extraction of tar acids from low temperature coal tars ... by Yao Chun Cheng ...".
- 27021912 type "text".