. . "Herbert Loper" . . "1989" . "0-12243" . . . . . "1918" . . . . "1955" . "1896" . . . . . . . . . . . . . . . . . "United States" . . . . "Herbert B. Loper" . . . . . . . . . "Armed Forces Special Weapons Project" . . . "Herbert Loper" . . . . . . . . . . .