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1.
Study of the Reaction Between Phosphorus Pentachloride and Parasulphamine-Benzoic Acid by Hartman, Robert Nelson ISBN: 9781178785166 List Price: $15.75
2.
A Study of the Reaction Between Phosphorus Pentachloride and Parasulphamine-Benzoic Acid by Hartman, Robert Nelson, Rob... ISBN: 9781347944516 List Price: $19.95