Pashina, Ludmilla.
Unknown Author
Alan K. Waltz
United States. General Accounting Office. Health, Education, and Human Services Division.
Frank W Lewis
Kathleen O'Leary Morgan
United States. Bureau of the Census
I͡U. V. Borovskikh
W. Kössler
National Center for Health Statistics (U.S.)
United States. Agricultural Research Service
F. N. Dickinson