"Marketing apples grown in the Cumberland-Shenandoah region of Pennsylvania, Virginia, and West Virginia. "; "Swinson, Carl R. (Carl Robert), 1891-"; "Apples--Marketing--West Virginia.", "Apples--Marketing--Pennsylvania.", "Apples--Marketing--Virginia."; "Swinson, Carl R. (Carl Robert), 1891-"; "1931"; "Serial issue. Issued as: United States. Department of Agriculture. Technical bulletin, no.234 (1931:Mar.). "; ""; "P2766"; "pec"; "Apples--Marketing--Virginia.", "Apples--Marketing--West Virginia.", "Apples--Marketing--Pennsylvania."; "14256"; .