Foetal, infant and early childhood mortality

Further progress in reducing maternal and infant mortality : the record of 1945 and 1946 ; Federal Security Agency, Social Security Administration, Children's Bureau

Wolff, George, (1949)

Maternal and infant mortality in 1944, an inquiry into differential mortality : Federal Security Agency, Social Security Administration, U. S. Children Bureau

Wolff, George, (1947)

A note on the cost of children's mortality

Hansen, W. Lee, (1957)