Contribucion a la biologia del gorrion moruno, Passer Hispaniolensis (Temm.)

1984. Text in Spanish. Contribucion a la biologia del gorrion moruno, Passer Hispaniolensis (Temm.) en la Peninsula Iberica y sus relaciones ecologicas con el gorrion comun, Passer Domesticus (L.). Contribution to the Biology of the Moorish sparrow, Passer Hispaniolensis (Temm.) in the Iberian Peninsula and it's Ecological Relationships with the Common Sparrow, Passer Domesticus (L.). Paperback in very good condition, faded covers.