|
Paraguay | |
| [var. Oligoclase] Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959) |
| [var. Andesine] Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959) |
| [var. Andesine] Sulsona, P. T. (1959) Geology and mineral resources of Paraguay--a reconnaissance, with sections on Igneous and metamorphic rocks and soils. USGS Professional Paper: 327 Eckel, E. B. Milton, Charles |
| Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959) |
| Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959) |
| Woolley, A.R. (1987) Alkaline rocks and carbonatites of the world. p 207. (British Museum of Natural History, London) |
| Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959) |