Seasonal status, relative abundance, and behavior of the birds of Concepción, Departamento Santa Cruz, Bolivia / Susan E. Davis.

n.s. no.71(1993)

Geology and geochronology of the mammal-bearing Tertiary of the Valle de Santa María and Río Corral Quemado, Catamarca Province, Argentina / Larry G. Marshall -- , Bryan Patterson -- .

n.s. no.9(1981)