Fahrenwald, A. W. 1890- The size, number, and mineral-carrying efficacy of bubbles in flotation, by A. W. Fahrenwald and Lewis S. Prater. - Moscow, Id., University of Idaho, 1944. - 1 p. l., 1, 20 numb. l., incl. tables. 28 cm. Reproduced from type-written copy. LCCN: gs 45000021 Subjects--Topical Terms: Flotation. LC Class. No.: TN24.I2 / A43 no. 69