Proceedings of the Pennsylvania Rural Progress Association Country Life Conference [microform] : March 14, 15, 16, 1912, Council Chamber, City Hall, Philadelphia / under the auspices of the Philadelphia Society for Promoting Agriculture
Microfilm. University Park, Pa. : Pennsylvania State University, 1997. 1 microfilm reel ; 35 mm. (USAIN state and local literature preservation project. Pennsylvania) (Pennsylvania agricultural literature on microfilm).