Danforth, Stuart T. 1935. “INVESTIGATIONS CONCERNING CUBAN BIRDS, WITH SPECIAL REFERENCE TO THEIR ECONOMIC STATUS, AND CONSIDERATION OF THOSE WHICH MIGHT BE DESIRABLE FOR INTRODUCTION INTO PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico 19 (4):421-37. https://doi.org/10.46429/jaupr.v19i4.14278.