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1784 - 1820 : documents 1 - 661
Manning, William R., (1940)
1821- 1835 : documents 662 - 1192
Manning, William R., (1942)
1836 - 1848 : documents 1193 - 1853
Manning, William R., (1943)
An econometric analysis of the US apple industry
Willett, Lois Schertz, (1992)
An economic analysis of the US honey industry
The effectiveness of concept mapping as a teaching tool : evidence from courses in applied economics
Willett, Lois Schertz, (1993)