00696cam a22002291 4500 e 10001802 DLC 20260227111154.0 790716s1910 enk b 000 0 eng c e 10001802 (OCoLC)5177313 Library, U.S. Bur. of Education OCl DLC HD6250.G7 K4 Keeling, Frederick Hillersdon. The labour exchange in relation to boy and girl labour, by Frederic Keeling. London, P.S. King & son, 1910. vi p., 1 l., 76 p. 21 cm. Bibliography: p. [73]-76. Employment agencies. Child labor. Occupations. 19063 19063