Front Matter
pp. 0
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The Robust Conehead: Two Widespread Sibling Species (Orthoptera: Tettigoniidae: Neoconocephalus "Robustus")
Walker, T. J.; Whitesell, J. J.; Alexander, Richard. D. pp. 321-330
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Strontium Isotope Geochemistry of the Scioto River Basin and the Sr/Sr Ratios of the Underlying Lithologies
Steele, John D.; Pushkar, Paul pp. 331-338
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Autoradiographic Study of the Developing Chick Embryo Esophagus
Ramey, Barbara A.; Allenspach, Allan L. pp. 339-345
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A Review and Analysis of the Utilization of Artificial Hearts in Mankind
Lanford, H. W.; Stickney, F. A.; Vasko, John S. pp. 346-353
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A Rapid Technique for the Detection of Nicotine in Developing Tobacco Seedlings
Wu, Pei-Hsing Lin; Sharp, William R. pp. 353-356
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The Foliose and Fruticose Lichen Flora of the Ohio River Valley Between Gallipolis, Ohio, and Parkersburg, West Virginia
Showman, Ray E. pp. 357-363
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Myxomycetes from the Everglades National Park and Adjacent Areas, I
Keller, Harold W. pp. 364-369
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Changes in Biomass of Six Dominant Plant Species During Oldfield Succession in Southeastern Indiana
Root, Robert A.; Wilson, Roger E. pp. 370-375
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Helminth Parasites of the Brown-Headed Cowbird, Molothrus Ater Ater, from Ohio
Cooper, C. Lawrence; Troutman, E. Louise; Crites, John L. pp. 376-380
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Index to Volume 73
pp. 381-384
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Back Matter
pp. 999
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