na INLIS000000000003099 Ind 0010-1118003099 Structures assisting the migrations of non-salmonid fish : USSR PAVLOV, D.S. D.S. Pavlov Rome FAO 1989 vii, 97 p. : ill. ; 30 cm.-- vii, 97 p. : ill. ; 30 cm.-- 92-5-102857-5 Sr.FAO Bibl. p. 80-88 639.2.21 FISHES ANIMAL MIGRATION 1029/FAO/90