18thcentury 1909-2001 africanamericansintheprofessions agriculturallaborers assam berlin braindrain businesscycles businessenterprises careerchanges careerdevelopment careermobility churchandeducation conflictoflaws congresses cross-culturalstudies education educationalsociology emigrationandimmigration employment engineering engineers essays europe families germany greatbritain history hm291s6781982 humancapital immigrants india informal internationalcooperation jobcreation jobsecurity laborcontract laborlawsandlegislation labormarket labormobility laborsupply lifestyles longitudinalstudies manpower medicalpersonnel medicalpolicy middleclass minorities personality professions psychology science scientists self-actualization(psychology) sewell skilledlabor social socialclasses socialcontrol socialmobility socialpsychology socialstatus supplyanddemand sweden teaplantationworkers unitedstates westindians williamh workandfamily