Industrial Instability of Child Workers. A Study of Employment-certificate Records in ConnecticutRobert Morse WoodburyInbunden579 kr
Infant Mortality; Results of a Field Study in Akron, OhioTheresa Sylvia Haley, Robert Morse WoodburyInbunden589 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauInbunden639 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauHäftad469 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauInbunden639 kr
Infant Mortality; Results of a Field Study in Akron, OhioTheresa Sylvia Haley, Robert Morse WoodburyInbunden589 kr
Causal Factors in Infant Mortality; a Statistical Study Based on Investigations in Eight CitiesRobert Morse Woodbury, United States Children'S BureauHäftad469 kr
Industrial Instability of Child Workers. A Study of Employment-certificate Records in ConnecticutRobert Morse WoodburyInbunden579 kr