E[conomia] & S[ociologica] R[ural].

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Item Link Original Source
Limited (search only)   no.1-21 1947-52 Pennsylvania State University
Limited (search only)   no.22-40 1953-57 Pennsylvania State University
Limited (search only)   no.41-53 1957-59 Pennsylvania State University
Limited (search only)   no.54-64 1959/60 Pennsylvania State University
Limited (search only)   no.65-74 1961-68 Pennsylvania State University