21. 



22. 



Simmons, 1957. 



Tagatz, 1968b, 1969. 



Tan, 1962. 



Tan and Van Engel, 1966. 



Thompson, 1899. 



U.S. Bureau of Fisheries, 1938. 



Van Engel, 1958. 



Vernberg and Vernberg, 1968, 1969. 



Williams, 1965. 



Zilberberg, 1966. 



f. Atomic wastes (Radioactivity): 



Boroughs, Chipman, and Rice, 1957. 



Chipman, 1960. 



Duke, Baptist, and Hoss, 1966. 



Engel, 1967. 



Hoss, 1963. 



g. Dredging, Channel construction, Weirs, 

 Marsh destruction: 



Herke, 1968. 



Manning, 1957. 



Rounsefell, 1964. 



Thompson, 1957. 

 h. River flow: 



Pearson, 1948. 



Pritchard, 1951. 

 i. Fluoride: 



Moore, 1969. 

 Mass mortalities: 

 Anonymous, 1969. 

 Christmas, 1969. 



Commercial Fisheries Review, 1967, 1968. 

 Gunter, 1942. 



Gunter, Williams, Davis, and Smith, 1948. 

 Hedgpeth, 1957. 

 Hunter, 1969. 

 Leidy, 1889. 

 More, 1969. 

 Newcombe, 1945. 

 Sawyer, 1969. 



Sindermann and Rosenfield, 1967. 

 Sprague and Beckett, 1966, 1968. 

 Sprague, Beckett, and Sawyer, 1969. 

 Fishery: 



Anderson and Gehringer, 1965. 



Andrews, 1947, 1948b. 



Anonymous, 1959, 1965, 1966a, 1966b, 



1968a. 

 Barnes, 1904. 

 Baughman, 1950. 

 Beaven and Truitt, 1939. 

 Benarde, 1959a, 1960. 

 Brooks, 1893. 



Cargo, 1954b. 



Cargo and Cronin, 1951. 



Carley, 1968. 



Carley and Frisbie, 1968a, 1968b. 



Churchill, 1918, 1920. 



Commercial Fisheries Review, 1955a, 



1960a, 1960b. 

 Cronin, 1949b, 1950. 

 Cummins and Rivers, 1962. 

 Dassow, 1963. 



Dassow, Pottinger, and Holston, 1956. 

 Davis, 1942. 



Dragovich and Kelly, 1964. 

 Dumont and Sundstrom, 1961. 

 Earll, 1887. 

 Evans, 1939, 1946. 

 Fairbanks and Hamill, 1932. 

 Fiedler, 1930. 

 Fischler, 1963, 1965. 

 Floyd, 1968. 

 Forrest, 1956. 

 Futch, 1965. 

 Godman, 1833. 

 Gowanloch, 1952. 

 Green, 1952. 

 Gunter, 1967. 

 Heald, 1968. 

 Hite and Stepp, 1969. 

 Hopkins, 1942. 

 Isaacson, 1963. 

 Jacobs (ed.), 1944. 

 Lunz, 1958. 

 MacGregor, 1950. 

 Marine Chemurgics, Inc., 1968. 

 Maryland Tidewater News, 1953. 

 McHugh, 1967. 

 McHugh and Bailey, 1957. 

 McHugh and Ladd, 1953. 

 More, 1969. 

 Newcombe, 1945. 

 Olden, 1960. 

 Paulmier, 1903, 1904. 

 Pearson, 1942, 1948, 1951. 

 Poole, 1962. 

 Porter, 1956. 

 Pounds, 1961. 

 Rathbun, 1887. 

 Roberts, 1905. 



Saenz, Dubrow, and Cerniglia, 1959. 

 Sandoz, 1943. 

 Sette and Fiedler, 1925. 

 Shuster, 1959. 



89 



