Document Type : Original Article
Authors
1 Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agriculture Sciences and Natural Resources, Gorgan, Iran.
2 Fisheries Department of Mazandaran Province, Babolsar, Iran.
3 Department of Statistics, Faculty of Sciences.Golestan University, Gorgan, Iran.
4 Ecological Research Center of the Caspian Sea, Sari, Iran.
Abstract
Keywords