This text investigates the phenomenon of polymorphism in molecular crystals, addressing how multiple structural forms of a single chemical substance influence material properties and industrial applications. Joel Bernstein, a recognized authority in the field of crystallography, synthesizes decades of research to provide a comprehensive framework for understanding the structural diversity of organic molecules. The book bridges the gap between theoretical chemistry and practical application, offering a structured analysis of why substances exhibit varying crystal forms and how these differences impact sectors such as pharmaceuticals and dyes.

Experts identify this monograph as a foundational reference for researchers and professionals working in materials science and pharmaceutical development. Readers frequently note the technical density of the prose, which serves as a rigorous guide for those seeking a deep understanding of molecular crystal behavior.