Title: Utilization of tractors and cost of tractor power on grain farms
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF005403449&ix=pm&I=0&V=D&pm=1" rel="nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF005403449&ix=pm&I=0&V=D&pm=1</a>
Subjects: Trucks, Grain--United States, Tractors.