//-->
Statistics
Ferenczi, Imre, (1929)
Applied mathematical demography
Keyfitz, Nathan, (2005)
Demographic analysis : projections on natality, fertility and replacement
Pressat, Roland, (2008)
Fiscal planning for total war
Crum, William Leonard, (1942)
Introduction to economic statistics : By William Leonard Crum, Alson Currie Patton and Arthur Rothwell Tebbutt
Crum, William Leonard, (1938)
Advertising Fluctuations, seasonal and cyclical
Crum, William Leonard, (1927)