V.1. Structure, by W. G. Moffatt, G. W. Pearsall, and J. walff.-V.2. Thermodynamics of structure, by J. H. Brophy, R. M. Rose, and J. Wulff.- V.3. Mechanical behavior, by W. Hayden, W. G. Moffatt, and J. Wulff.- V.4. Electronic properties, by R. M. Rose, L. A. Shepard, and J. Wulff