TY - BOOK ED - United States. TI - System for measuring mail delivery performance: its accuracy and limits, United States Postal Service T2 - Report to Congress, by Comptroller General of United States PY - 1975///] CY - [Washington, D.C. KW - Postal service KW - United States N1 - Cover title; [B--114874]; Oct. 17, 1975; Distribution made by issuing office, paper, each, $1.00; 4to; CRDP Program Historic Shelflist record ER -