APA

In situ processing of coal, . (1977). Properties of coal ash. Symposium, Montreal, Canada, May 29 - June 2, 1977. Preprints of papers. Washington DC: American Chemical Society. Division of Fuel Chemistry. Vol 22 no 4.

Chicago

In situ processing of coal, . 1977. Properties of coal ash. Symposium, Montreal, Canada, May 29 - June 2, 1977. Preprints of papers. Washington DC: American Chemical Society. Division of Fuel Chemistry. Vol 22 no 4.

Harvard

In situ processing of coal, . (1977). Properties of coal ash. Symposium, Montreal, Canada, May 29 - June 2, 1977. Preprints of papers. Washington DC: American Chemical Society. Division of Fuel Chemistry. Vol 22 no 4.

MLA

In situ processing of coal, . Properties of coal ash. Symposium, Montreal, Canada, May 29 - June 2, 1977. Preprints of papers. Washington DC: American Chemical Society. Division of Fuel Chemistry. Vol 22 no 4. 1977.