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Originally published by The McNaughton Foundation in the 1970s, this rare book is
spiral bound. From the Acknowledgements: “We wish to thank Ernst T. Krebs, Hr.
for his foreword to this translation of various studies carried out by the U.S.S.R.
Academy of Sciences on Pangamic Acid (Vitamin B15) and on one of its analogs,
Dipan.” See thumbnails of Table of Contents.