field crop costs and returns 1948 1954 a study of costs and returns in four m
by
r h wilcox
series:
Unknown
first published:
Unknown
figuring milk production costs in northern illinois results of study ways to
by
r h wilcox
series:
Unknown
first published:
Unknown
management factors that influence farm profits in southwest illinois a study b
by
r h wilcox
series:
Unknown
first published:
Unknown
poultry costs and profits six year study of general farm flocks and semi comme
by
r h wilcox
series:
Unknown
first published:
Unknown
some important factors affecting costs in hog production
by
r h wilcox
series:
Unknown
first published:
Unknown
