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
$ 15.00
Oceanography IV. The Work of the Carnegie and Suggestions for Future Scientific Cruises,
by Ault, Captain J.P.
$ 16.00
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
$ 15.00
Ol Tumbuna: Archaeological Excavations in the Eastern Central Highlands, Papua New Guinea
by White, J. Peter
$ 50.00
Old World Monkeys: Evolution, Systematics, and Behavior
by Napier, J.R. and Napier, P.H. (editors)
$ 25.00
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.
$ 1,200.00
Olive Crowned Roller (Coracias mosambicanus) Hand-Colored Plate
by Dresser, H. E. and Keulemans, J. G.
$ 120.00