. . "Peter D. Wagner"@en . "P.D. Wagner" . . "1944-01-07" . . "D."@en . "P.D." . . . "Peter D." . . . "P. D. Wagner"@cs-CZ . "P." . . "Peter D. Wagner" . "Peter"@en . . . . "Wagner"@en . . "Wagner, P. D. (Peter D.)" .