Changing methods of farming have brought with them a trend for increased farm size. But the trend has been gradual. And it shows no signs of endangering the traditional base of Iowa family farms.
Heady, Earl O.
"What's Happening to Farm Size?,"
Iowa Farm Science: Vol. 12
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol12/iss9/2