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Maryland agricultural census data by countries, 1964 and 1969
Lessley, Billy V., (1972)
Maryland economic trends : production and marketing, family living 1962
(1961)
Census of agriculture / 1 / 20
(1990)
Analysis of the impact of farmer cooperatives on the agricultural economy of Maryland
Beiter, Robert J., (1965)
Factors Influencing Adoption of Best Management Practices in Maryland
Lichtenberg, Erik, (1990)