Iowa Agricultural College. Agricultural Experiment Station. (1888). Bulletin. Agricultural Experiment Station at the State Agricultural College.
Lua i Stíl Chicago (17ú heag.)Iowa Agricultural College. Agricultural Experiment Station. Bulletin. Ames, Iowa: Agricultural Experiment Station at the State Agricultural College, 1888.
Lua MLA (8ú heag.)Iowa Agricultural College. Agricultural Experiment Station. Bulletin. Agricultural Experiment Station at the State Agricultural College, 1888.
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