E.I. du Pont de Nemours & Company. (1915). How to organize, equip and conduct trapshooting clubs: Layout of grounds, installation of expert and automatic traps, the hand trap. E.I. du Pont de Nemours Powder Co.
Lua i Stíl Chicago (17ú heag.)E.I. du Pont de Nemours & Company. How to Organize, Equip and Conduct Trapshooting Clubs: Layout of Grounds, Installation of Expert and Automatic Traps, the Hand Trap. Wilmington, Del.: E.I. du Pont de Nemours Powder Co, 1915.
Lua MLA (8ú heag.)E.I. du Pont de Nemours & Company. How to Organize, Equip and Conduct Trapshooting Clubs: Layout of Grounds, Installation of Expert and Automatic Traps, the Hand Trap. E.I. du Pont de Nemours Powder Co, 1915.
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