Acta Cientifica- Asociacion de Maestros de Ciencia de Puerto Rico, Vol. 4, Num. 1-3, 1990

Rio Piedras, Puerto Rico: Instituto de Dasonomia Tropical, Servicio Forestal del Departamento de Agricultura de los Estados Unidos, Estacion Experimental de los Bosques del Sur, 1990. Paperback. 159pp. Quarto [27.5 cm] Illustrated wraps. Very good. The spine is sun faded. The title has also been written in pen on the spine. Minor soiling on the rear wrap. Internally very clean. Acta Cientifica is the multidisciplinary journal of the Puerto Rico Science Teachers Associations.