Industrial Instability of Child Workers. A Study of Employment-certificate Records in ConnecticutRobert Morse WoodburyInbunden435 kr
Infant Mortality; Results of a Field Study in Akron, OhioTheresa Sylvia Haley, Robert Morse WoodburyInbunden446 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauInbunden481 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauHäftad352 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauInbunden481 kr
Infant Mortality; Results of a Field Study in Akron, OhioTheresa Sylvia Haley, Robert Morse WoodburyInbunden446 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauHäftad352 kr
Industrial Instability of Child Workers. A Study of Employment-certificate Records in ConnecticutRobert Morse WoodburyInbunden435 kr