937. FIRTH, F. G. X-Ray Diffraction. I. Basic Principles and Theory. II. Constitution of Matter. III. Application of X-ray Diffraction. Petrol. refiner, vol. 24, No. 4, pp. 114-120; No. 5, 1945, pp. 117-119; No. 6, 1945, pp. 111-114.

937. FIRTH, F. G. X-Ray Diffraction. I. Basic Principles and Theory. II. Constitution of Matter. III. Application of X-ray Diffraction. Petrol. Refiner, vol. 24, No. 4, pp. 114-120; No. 5, 1945, pp. 117-119; No. 6, 1945, pp. 111-114.

Brief statement as to its applicability to the study of Fischer-Tropsch catalysts.