Iowa's 13,000 combines will have to work at least 11 days with no time out this fall in order to get Iowa's soybean crop harvested.
Struthers, D. K.
"Harvest Labor Problems,"
Farm Science Reporter: Vol. 3
, Article 2.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol3/iss3/2