Iowa Fisheries Research Technical Series No. 75-1 Variations in the abundance of channel catfish year classes in the upper Mississippi River and causative factors Don R. Helms, Fishery Research Biologist Fisheries Section Jerry M. Conley, Superintendent of Fisheries December, 1975

study of channel catfish in the Mississippi River to determine differences in year class abundance and causative factors

Report of the Section of Agencies and Institutions Division of Child Welfare State Department of Social Welfare, 1943

History of child and social welfare in the State of Iowa including legal responsibilities, rules and regulations, inspections and licensing and supervision. it also covers cooperation with state agencies. It also describes in detail the histories, functions and problems of individual welfare homes and schools.

Equipment and Vehicle Purchase Report for Fiscal Year 2009 as required by Iowa Code section 307.47

Attached is the Equipment and Vehicle Purchase Report for Fiscal Year 2009 as required by Iowa Code section 307.47. The report is sorted by Iowa Department of Transportation accounting object codes.