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I 19. 3 : 1975/ : Geology and mineral resources of the Altiplano and Cordillera Occidental, Bolivia / by U.S. Geological Survey and Servicio Geológico de Bolivia ; with a section on Application of economic evaluations to deposit models by Donald I. Bleiwas and Robert G. Christiansen.
I 19. 3 : 1978 : Mineralogy and chemistry of samples from a drill hole in the southern extension of the Land-Pebble Phosphate District, Florida : economics of phosphate mineralogy and chemistry in an area of possible future mining / by James B. Cathcart and Theodore Botinelly.