Thesis (PH. D.)--Columbia University, 1931. / Vita. "Literature cited": p. [57]. Also issued in print.

Thesis (PH. D.)--Columbia University, 1931. / Vita. eContent provider-neutral record in process. Description based on print version record. "Literature cited": p. [57].

Thesis (Ph. D.)--University of Illinois, 1921. / Vita. Caption title: Decomposition processes applicable to certain products of coal carbonization ... by M.J. Bradley with S.W. Parr. "Reprinted from Chemical and metallurgical engineering. vol. 27, no. 15. Oct. 11, 1922." Bibliography: p. 24.

Thesis (Ph. D.)--Columbia University, 1931. / Vita. "Authorized preprint from copyrighted articles in Gas age-record, volume 68, numbers 5, 6, and 7, August 1, 8, and 15, 1931." Bibliography: p. 35.

Thesis (Ph.D. (Engineering))--University of the Witwatersrand, Engineering Faculty (Civil Engineering), 1977 / The thesis deals with the development of improved road tarbinders in South Africa and their application in surface treatments and in mixes used for pavement wearing courses and base courses in this country. This work is timely in view of the country's current economic problems. Locally produced tarbinders are considerably less expensive than bitumen binders in inland areas; tar being produced in the Witwatersrand complex whereas locally refined bitumen is produced from imported crude oil. The annual expenditure on bitumen by the South African road industry is currently of the order of R26 000 0 0 0. However, previously it had been found that tarbinders were less durable than bitumen. [Abbreviated Abstract. Open document to view full version] / WS2017

Lignite is a low grade of coal widely distributed throughout the world. A complete analysis of lignite has not been made, due to the difficulty encountered in the separation of the complex organic compounds bonded therein.