32253286
9783642678509
Helfrich, W. is the author of 'Liquid Crystals of One- and Two-Dimensional Order : Proceedings of the Conference on Liquid Crystals of One- and Two-Dimensional Order and Their Applications, Garmisch- Partenkirchen, Federal Republic of Germany, January 21–25 1980', published 2012 under ISBN 9783642678509 and ISBN 3642678505.
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