- Parra, Luis A
- Parra, Luis E
- Parra, Luis E
- Parra, Luis E.
- Parra, Maria J
- Parra, Maria José
- Parra, María José
- Parra, O O
- Parra, O.
- Parra, Oscar
- Parra, Oscar
- Parra, Óscar
- Parra, Sabrina
- Parra, Vanessa
- Parra-Bracamonte, Gaspar Manuel
- Parrack, D W
- Parrack, Dwain W.
- Parra-Colorado, Jean Wilman
- Parrado, Maria F
- Parrado, María F
- Parra-Flores, Ana
- Párraga, Diana
- Párraga, Diana P
- Parra-Gómez, Antonio
- Parraguez, Margarita
- Parrales, Dumar Ariel
- Parrando, R T
- Parra-O., C
- Parra-O., Carlos
- Parra-Olea, Gabriela
- Parra-Olea, Gabriela
- Parra-Olea, Gabriela
- Parra-Olea, Gabriela.
- Parras, Ana
- Parra-Tabla, Victor
- Parra-Velandia, Fernando
- Parra-Velandia, Fernando J
- Parra-Velandia, Fernando José
- Parreira, Maria Helena
- Parrella Dahlia Gardens.
- Parrella, Albert.
- Parrella, M P
- Parrella, Michael P
- Parresol, Bernard R
- Parrett, Lincoln S.
- Parrilli, Federico Ezequiel
- Parrillo, Philip P
- Parrinello, Nicolo
- Parrington, F R
- Parrinha, Diogo
- Parrini, Ricardo
- Parrini, Ricardo
- Parrique, Géraud, 1851-1907
- Parris, Barbara
- Parris, Barbara S
- Parris, David C.
- Parris, G. K. (George Keith), 1908-
- Parris, S D
- Parris, Stephen D
- Parris, T
- Parrish, Barnard D.
- Parrish, Donna L.
- Parrish, Edward, 1822-1872
- Parrish, Frank A
- Parrish, G Richard
- Parrish, H M
- Parrish, J L
- Parrish, J R
- Parrish, J W
- Parrish, J. Michael, 1953-
- Parrish, James D
- Parrish, John Bishop, 1911-
- Parrish, Judith T
- Parrish, Julia K
- Parrish, Lorrie
- Parrish, Maxfield, 1870-1966
- Parrish, S., naturalist.
- Parrocel, Charles, 1688-1752
- Parrondo, Rolando Teodulo, 1937-
- Parrot, A-G
- Parrot, C
- Parrot, Carl
- Parrot, F J E
- Parrot., Garl
- Parrott, A W
- Parrott, Arthur W
- Parrott, P J
- Parrott, William G.
- Parrotta, John A.
- Parry Nurseries.
- Parry, B W
- Parry, C C
- Parry, C. C.
- Parry, C. C. (Charles Christopher), 1823-1890
- Parry, E. R. 1821-
- Parry, Frederic John Sidney, 1810-1885
- Parry, G D
- Parry, Gregory D
- Parry, Hazel
- Parry, J
- Parry, J A
- Parry, John R.
- Parry, L G
- Parry, N E
- Parry, R
- Parry, R E
- Parry, R H
- Parry, William Edward, Sir, 1790-1855
- Parry, William, 1817-1888
- Parry, William.
- Parry, Wm.
- Parry’s Pomona Nurseries.
- Parry's Pomona Nurseries.
- Parsa, M A
- Parsa, Rahul
- Parsa, Soroush
- Parsch, Karl O A
- Parsell, Madeleine
- Parser, W J
- Parseval, August von, 1861-
- Parseval-Grandmaison, Jules de
- Parseval-Grandmaison, Jules, (Alexandre-Jules de),
- Parshad, B
- Parshad, V R
- Parshall, D K
- Parshall, David K
- Parshall, Nelson C.
- Parshley, H M
- Parshley, H. M. (Howard Madison), 1884-1953
- Parsons & Co. (Flushing, New York, N.Y.)
- Parsons & Sons Co.
- Parson's Garden (Holliston, Mass.)
- Parsons Wholesale Nurseries.
- Parsons Wholesale Nursery.
- Parsons, Mrs. (Eliza), 1811
- Parsons, Alexandra L.
- Parsons, Alfred, 1847-1920
- Parsons, Basil
- Parsons, Beatrice, 1870-1955
- Parsons, C F
- Parsons, C Q
- Parsons, C T
- Parsons, C. E.
- Parsons, Carl T
- Parsons, Charles W.
- Parsons, D J
- Parsons, David J
- Parsons, David R.
- Parsons, E C M
- Parsons, Elsie Worthington Clews, 1874-1941
- Parsons, Eustace Robert, 1854-
- Parsons, F G
- Parsons, Frances Theodora, 1861-1952
- Parsons, Frank E
- Parsons, G A
- Parsons, Glen Joseph
- Parsons, H. Franklin (Henry Franklin), 1846-1913
- Parsons, Henry Griscom.
- Parsons, J
- Parsons, Jason
- Parsons, Jenifer K
- Parsons, John Herbert, Sir, 1868-1957
- Parsons, John L.
- Parsons, Lorraine S
- Parsons, Lura Elizabeth.
- Parsons, M
- Parsons, M C
- Parsons, M S
- Parsons, Mabel, 1872-
- Parsons, Margaret C
- Parsons, Marion Randall.
- Parsons, Mark
- Parsons, Mark S
- Parsons, Mary Elizabeth
- Parsons, Mary Elizabeth, 1859-1947
- Parsons, Michael J
- Parsons, Michael L.
- Parsons, P A
- Parsons, Peter A
- Parsons, R E
- Parsons, R F
- Parsons, R R
- Parsons, R Randall
- Parsons, Robert R.
- Parsons, Ryan J
- Parsons, S W E
- Parsons, S., Rev.
- Parsons, Samuel B.
- Parsons, Samuel Bowne, 1819-1906
- Parsons, Samuel, 1844-1923
- Parsons, T
- Parsons, Theophilus
- Parsons, Thomas C.
- Parsons, Thomas Sturges 1930-
- Part, Gerald M
- Partanen, C R
- Partata, WA
- Pärtel, Kadri
- Parten, B
- Partensky, F
- Parth, M
- Parth, Manfred
- Parthasarathy, M D
- Parthasarathy, M V
- Partida, Alejandra
- Partington, Charles Frederick, 1857?
- Partington, Charles Frederick, 1857?
- Partington, Frederick E., 1924
- Partners for Fish and Wildlife Program (U.S. Fish and Wildlife Service),
- Partners in Amphibian and Reptile Conservation.
- Partners in Flight. Western Working Group.
- Partners in Protection (Canada)
- Partomihardjo, Tukirin, 1952-
- Parton, G F
- Parton, Marie
- Partridge, Alan D
- Partridge, Fred E.
- Partridge, J
- Partridge, J C
- Partridge, L. Donald, Jr.
- Partridge, Newton L.
- Partridge, Steven T.
- Partridge, Vanessa
- Partridge, William, ornithologist.
- Partridge, William, ornithologist.
- Partridge, William.
- Partsch, Paul Maria
- Partt, Henry S
- Paruelo, J.M.
- Paruelo, José
- Paruelo, José M
- Paruelo, José María
- Parui, P
- Paruk, James D
- Parulekar, A
- Parulekar, A H
- Parvanov, Dimitar
- Parvanova, Petya
- Parvanova, Petya N.
- Parvanova, Petya Nikolaeva
- Parvathi, C
- Parvin, Geo. H.
- Parvin, Sahana
- Parvin, Theodore Sutton, 1817-1901
- Pârvu, Corneliu
- Parvulescu, Lucian
- Parvulescu, V
- Parys, Katherine
- Parzudaki, Émile.
- Pas, Jorik van der