Tudományterület szerző szerint "Harka, Á."

Harka, Á.; Sallai, Z.; Wilhelm, Sándor: Effects of water pollution and global warming on the fish fauna of the Romanian tributaries of the River Tisza. Tiscia 33. pp. 51-58. (2002)

Harka, Á.; Györe, Károly; Lengyel, P.: Growth of the golden spined loach [Sabanejewia aurata (Filippi, 1865)] in River Tisza (Eastern Hungary). Tiscia 33. pp. 45-49. (2002)

Harka, Á.: Investigation of the relation between body length and body weight of the pike-perch (lucioperca lucioperca L.) in the Tisza-stretch at Tiszafüred. Tiscia 10. pp. 77-80. (1975)