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Publication Extents

Not all publications have extents, not all extents are completely accurate
Notes on Costia Necatrix
F. F. Fish
1941, Transactions of the American Fisheries Society (70) 441-445
Costiasis, or the disease produced by the flagellated protozoan ectoparasite, Costia necatrix, is of considerable importance in the artificial propagation of both warm- and cold-water fishes. In spite of its importance, costiasis seldom is accurately diagnosed probably because of the extremely small size and sedentary nature of the causative organism....