Basic data ... 1975.

Population and development in Kenya, 1984: t.p. (David F. Sly; prof., Population Inst., Dept. of Sociology, Fla. State Univ.)

Impact of migration in the receiving countries. United States, 1994: t.p. (D.F. Sly) added t.p. (David F. Sly)

The income, expenditures & net expenditures of children in households in rural Syria, 1987: t.p. (David F. Sly, Florida State University)