The romance of natural history - Gosse, Philip Henry, 1810 -1888 (Gould and Lincoln, 1861)

Roosevelt wild life annals - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (Roosevelt Wild Life Forest Experiment Station, 1929)

The Rotifera of the Scottish lochs - Royal Society of Edinburgh. (Robert Grant & Son, 1906)

The Rotifera; or wheel-animalcules, both British and foreign - Gosse, Philip Henry, 1810 -1888 (Longmans, Green, and co, 1889)

The rotifera; or, Wheel-animalcules, both British and foreign - Hudson, C. T. (Charles Thomas), 1828 -1903 (Longman, 1889)

The Rotifera : or wheel-animalcules, both British and foreign - Gosse, Philip Henry, 1810 -1888 (Longmans, Green, 1889)

The Rotifera : or wheel-animalcules, both British and foreign - Gosse, Philip Henry, 1810 -1888 (Longmans, Green, 1886)