George Washington University. Population Information Program, George Washington University. Dept. of Medical and Public Affairs, & Johns Hopkins University. Population Information Program. Population reports. Population Information Program, The Johns Hopkins University,.

George Washington University. Population Information Program, George Washington University. Dept. of Medical and Public Affairs, and Johns Hopkins University. Population Information Program. Population Reports. Baltimore, Md.: Population Information Program, The Johns Hopkins University,.

George Washington University. Population Information Program, et al. Population Reports. Population Information Program, The Johns Hopkins University,.