@book {3004, title = {History, taxonomy, ecology, and evolution of species of Tetrahymena.}, series = {Biology of Tetrahymena}, year = {1973}, note = { General, Diags.}, pages = {1-55}, publisher = {Dowden, Hutchinson and Ross, Stroudsburg.}, organization = {Dowden, Hutchinson and Ross, Stroudsburg.}, keywords = {Tetrahymena pyriformis, Tetrahymena rostrata, Tetrahymena vorax}, author = {Corliss, J. O.}, editor = {Elliott, A. M.} }