Open AccessDistribution of outgoing first class lettermail at the Washington, D.C. Post Office
Author(s) -
Arthur E Newman
Publication year - 1959
Language(s) - English
Resource type - Reports
DOI - 10.6028/nbs.rpt.6365
Subject(s) - class (philosophy) , distribution (mathematics) , post office , mathematics , computer science , political science , postal service , public administration , artificial intelligence , mathematical analysis