district of columbia

n.

哥伦比亚特区（美国联邦直辖区）；

District of Columbia
Effects of restrictive licensing of handguns on homicide and suicide in the District of Columbia.
Academic Learning Time in the District of Columbia Public Schools.
Glaucoma and the law. Cox v District of Columbia
Elevated HIV prevalence despite lower rates of sexual risk behaviors among black men in the District of Columbia who have sex with men
The District of Columbia's "Firearms Control Regulations Act of 1975": The Toughest Handgun Control Law in the United States—Or Is ...
Uninsured patients in District of Columbia hospitals
Black/white comparisons of deaths preventable by medical intervention: United States and the District of Columbia 1980-1986.
Financial Aid and Students' College Decisions: Evidence from the District of Columbia Tuition Assistance Grant Program
Birds of Maryland and the District of Columbia