Handbook of Ohio experiments in agronomy.

Mode of access: Internet.

Extension bulletin S. B.

No. 15 issued also as Public information, series 5 of the Ohio Agricultural Experiment Station, Wooster.

Ohio farm income.

Mode of access: Internet.

Research summary - Ohio Agricultural Research and Development Center.

Bibliography of agriculture

Annual report ./

8th- , 1889 - , numbered as Bulletin no. 15-

Bulletin.

Mode of access: Internet.

Research bulletin.

Contains its Annual report, 8th-71st, 1889-1953 (title varies).

Ohio report.

Title from cover.