. "1920" . "P." . "Hans Riemann"@en-US . "H. P." . "Hans P. Riemann" . "University of California. School of Veterinary Medicine. Department of Epidemiology and Preventive Medicine (Davis, CA); University of Florida. Department of Preventive Medicine (Gainesville, FL)" . . "H." . "Riemann" . "Hans" . "H.P" . . "Hans P." . . "H. P. Riemann" . "Hans P. Riemann" . . "H.P Riemann" . "H. P. Riemann"@de-DE . "H.P. Riemann"@nl-NL . . .