1.
|
Second addition to the knowledge of the Batrachia and Reptilia of Costa Pica Cope, Edward Drinker
|
2.
|
Third addition to a knowledge of the Batrachia and Reptilia of Costa Rica Cope, Edward Drinker
|
3.
|
Contributions to our knowledge of the duration of life in vertebrate animals Flower, Stanley S
|
4.
|
Additions to the knowledge of the amphibians of the Estacion de Biologia Tropical "Los Tuxtlas" Pérez Higareda, Gonzalo
|