Books in Browsing: Science - Earth/Agricultural/Farming (sorted alphabetically by author)
- Breves palavras sobre a cultura da Oliveira (Portuguese) Avelino Nunes d'Almeida
- Humanity to Honey-Bees Thomas Nutt
- Orchids James O'Brien
- The Ohio Naturalist, vol. II, no. 2, December, 1901 Ohio State University. Biological Club
- The Ohio naturalist, Vol. 1, No. 3, January, 1901 Ohio State University. Biological Club
- The cretaceous birds of New Jersey Storrs L. Olson and David C. Parris
- Štafeta (Czech) František Omelka
- Underground Treasures: How and Where to Find Them James Orton
- Atoms in Agriculture: Applications of Nuclear Science to Agriculture (Revised) Thomas S. Osborne
- Birds useful and birds harmful J. A. Owen and Ottó Herman
- Cave Regions of the Ozarks and Black Hills Luella Agnes Owen
- Geology and Inhabitants of the Ancient World Richard Owen
- The zoology of the voyage of H.M.S. Beagle [vol. 1 of 5] : Fossil mammalia Richard Owen
- The School Book of Forestry Charles Lathrop Pack
- A Little Garden Calendar for Boys and Girls Albert Bigelow Paine
- The Eruption of Vesuvius in 1872 Luigi Palmieri
- Zetetic astronomy: Earth not a globe! Parallax
- A Guide to the Mount's Bay and the Land's End John Ayrton Paris
- Paradisi in sole paradisus terrestris, or, A garden of all sorts of pleasant flowers which our English ayre will permitt to be noursed vp John Parkinson
- The Book of Roses Francis Parkman
- How to know the ferns : A guide to the names, haunts and habitats of our common ferns Frances Theodora Parsons
- Parsons on the Rose Samuel Browne Parsons
- Importanza e risultati degli incrociamenti in avicoltura (Italian) Teodoro Pascal
- The Bee Keeper's Guide, Third Edition J. H. Payne
- Bee-keeping for the Many; or, The management of the common and Ligurian honey bee J. H. Payne