Background This paper examines the associations between state-level gun control and adolescent school safety overall and by student sex, age, and race. Methods We used data on 926 639 adolescents from ...
Gun and mechanism. Ammunition -- Power and cartridge --Projectiles. Mountings -- Recoil mounting -- Hind sight -- Fore sight -- Speed sight. General description of the mechanism -- To prepare the gun ...
Pagination 30 pages : illustrations,tables, plates ; 25 cm.
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