Revue horticole (Librairie agricole de la maison rustique, 1913)

Revue horticole (Librairie agricole de la maison rustique, 1914)

Revue horticole (Librairie agricole de la maison rustique, 1915)

Revue horticole (Librairie agricole de la maison rustique, 1916)

Revue horticole (Librairie agricole de la maison rustique, 1920)

Revue horticole (Librairie agricole de la maison rustique, 1922)

Revue internationale des sciences (O. Doin, 1878)

Revue mycologique (Bureaux de la rédaction, 1882)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1897)

Reynolds Gardens, "for the flower hobbyist", Armonk, New York - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reynolds Gardens, 1957)

Reynolds Gardens, "one or more of each variety", Armonk, New York - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reynolds Gardens, 1955)

Reynolds Gardens, "one or more of each variety", Armonk, New York - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reynolds Gardens, 1956)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1900)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1953)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1981)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1989)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2001)

Riassunto generale dei risultati zoologici - Fea, L. (Leonardo), 1852 -1903 (Tipografia R. Istituto Sordo-Muti, 1897)

Richard Schomburgk's travels in British Guiana, 1840-1844 - Schomburgk, Richard, 1811 -1891 ("Daily Chronicle" Office, 1922)

Richardiana (Tropicalia, 2002)

Richardiana (Tropicalia, 2001)

Richardiana (Tropicalia, 2004)

Richardiana (Tropicalia, 2003)

Richardiana (Tropicalia, 2005)

Richardiana (Tropicalia, 2006)

Richardiana (Tropicalia, 2008)

Richardiana (Tropicalia, 2007)

Richardiana (Tropicalia, 2009)