The monograph presents current data on the pathogenesis, clinic and therapy of the most common and common hereditary anemic conditions (thalassemias, sickle cell anemias), methemoglobinemias and erythrocytoses. The book describes erythrocyte fermentopathies and hemoglobinopathies found in the USSR, Hungary and Cuba, which are endemic in some areas and are related to the pathology of pregnant women and newborns. For hematologists, geneticists, biochemists, cytologists.