Nova Genera ac Species Plantarum in regno Chilensi Peruviano et in terra Amazonica
By Poeppig, Eduardus and Endlicher, Stephano
SKU# 12255
$ 200.00
Nuevos datos sobre el genero Telmatobius en el Noroeste Argentino con descripcion de una nueva especie de al Sierra del Manchao
By Laurent, Raymond P.
SKU# 14855
$ 13.00
Obras Completas / Adolfo Ernst (compilación por Blas Bruni Celli; coordinador de la edición, Miguel Suárez), tomo I-X, complete
By Ernst, Adolfo
SKU# 18984
$ 1,250.00
Observations on Pacific Cetaceans of Californian and Mexican Waters
By Norris, Kenneth S. and Prescott, John H.
SKU# 19293
$ 20.00
Observations on the Genus Mesembryanthemum, in Two Parts, containing scientific descriptions of above one hundred and thirty species
By Haworth, Adrian Hardy
SKU# 16186
$ 1,850.00
Observations sur les Tortues terrestres et paludines de Bassin de la Mediterranee
By Lortet, L.
SKU# 19804
$ 1,600.00
Observations sur les Variations Accidentelles du Mode survant lequel les Feuilles sont distribuées sur les Tiges des Végétaux
By Dutrochet, M.
SKU# 13093
$ 12.00
Observing Whales: Participation of the Netherlands mariners in the Whale Research Project has proved a great success – after three years, 4500 reports with about 3500 observations
By Slijper, E. J. and Utrecht, W. L. van
SKU# 15209
$ 15.00
Oceanography IV. The Work of the Carnegie and Suggestions for Future Scientific Cruises,
By Ault, Captain J.P.
SKU# 11725
$ 16.00
$ 285.00
Of Two Worlds: Frogs, Toads and Salamanders of the Yucatan Peninsula, Mexico / De Dos Mundos: Sapos, Ranas y Salamandras en la Peninsula de Yucatan, Mexico
By Galindo-Leal, Carlos
SKU# 16594
$ 15.00
Ol Tumbuna: Archaeological Excavations in the Eastern Central Highlands, Papua New Guinea
By White, J. Peter
SKU# 14697
$ 50.00
Old World Monkeys: Evolution, Systematics, and Behavior
By Napier, J.R. and Napier, P.H. (editors)
SKU# 18218
$ 25.00
$ 125.00
Olduvai Gorge, Volumes I-V in six volumes, complete (the original printing in dust jackets)
By Leakey, L. S. B., Leakey, M. D., Tobias, P. V. and Roe, D.
SKU# 18320
$ 1,200.00
Olive Crowned Roller (Coracias mosambicanus) Hand-Colored Plate
By Dresser, H. E. and Keulemans, J. G.
SKU# 18420
$ 120.00