Pteridophyta of Peru. Rolla M. Tryon, Robert G. Stolze ; with the collaboration of Blanca León.

n.s. no.32(1993)

A new plethodontid salamander from Nuevo León, Mexico.

v.39:no.3(1956)

The birds of Sibuyan Island, Romblon Province, Philippines : with particular reference to elevational distribution and biogeographic affinities / Steven M. Goodman, David E. Willard, Pedro C. Gonzales.

n.s. no.82(1995)