Medical care during the depression : a preliminary report upon a survey of wage-earning families in seven large cities

von Perrott, G. St. J.
Veröffentlicht in Milbank Memorial Fund Milbank Memorial Fund quarterly (1934)

Refractive Errors in the eyes of children as determined by retinoscopic examination with a cycloplegic : Results of eye examinations of 1,860 white school children in Washington,...

von Kempf, Grover A.
Veröffentlicht 1928