Walker, J. A. (1984). Volcanic rocks from the Nejapa and Granada Cinder Cone Alignments, Central Americaq. US: Departamente of Geological Sciences, New Jersey.
Citación estilo ChicagoWalker, James Allen. Volcanic Rocks From the Nejapa and Granada Cinder Cone Alignments, Central Americaq. US: Departamente of Geological Sciences, New Jersey, 1984.
Cita MLAWalker, James Allen. Volcanic Rocks From the Nejapa and Granada Cinder Cone Alignments, Central Americaq. US: Departamente of Geological Sciences, New Jersey, 1984.
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