(1)
J. GRABANDT , R. A. DESCRIPTION OF SOME TAXA OF TESTACEA OF HUMID PARAMO VEGETATION TYPES OF THE COLOMBIAN CORDILLERA ORIENTAL . Rev. Acad. Colomb. Cienc. Ex. Fis. Nat. 1983, 15 (58), 31-40. https://doi.org/10.18257/raccefyn.15(58).1983.3778.