Contains ms text of lectures delivered by Helen Megaw in:
Lent Term 1966, including material on felspars and ferroelectricity;
Michaelmas Term 1966 - Symmetry and Structures;
Long Vacation Term and Michaelmas Term 1967 - X-Ray Diffraction by Crystals / Fourier Methods;
Lent Term 1968: General Crystallography - Symmetry and Structures, Disorder and its Diffraction Effects, and Crystal Physics.