Heffelfinger, Karen. "Studies of the structure and ultrastructure of the glochidial stage of the naiad Actinonaias ligamentina (Lamarck, 1819) (Mollusca: Bivalvia: Unionoida) /." Master's thesis, Ohio State University, 1969. http://rave.ohiolink.edu/etdc/view?acc_num=osu1729166444234123Chicago Manual of Style (17th edition)