Bernard, E., & Nemec, J. (1970). Expansion and improvement of the hydrometeorological and hydrological service in the Central American Isthmus: Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama. [Lugar de publicación no identificado]: United Nations Development Programme, World Meteorological Organization.
Citación estilo ChicagoBernard, Etienne, y Jeromir Nemec. Expansion and Improvement of the Hydrometeorological and Hydrological Service in the Central American Isthmus: Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama. [Lugar de publicación no identificado]: United Nations Development Programme, World Meteorological Organization, 1970.
Cita MLABernard, Etienne, y Jeromir Nemec. Expansion and Improvement of the Hydrometeorological and Hydrological Service in the Central American Isthmus: Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama. [Lugar de publicación no identificado]: United Nations Development Programme, World Meteorological Organization, 1970.