Gregson, Ronald Edgar. <br/><br/>
Work, exchange and leadership  the mobilization of agricultural labor among the Tumbuka of the Henga Valley.  [microform] : 

 - Ann Arbor, MI :  University Microfilms,  1970. 
<br/><br/>Thesis (Ph.D.)--Columbia University, 1969. 
<br/><br/>Bibliography: p. 197-203. 
<br/><br/><br/>Microfilm. Ann Arbor, Mich. : University Microfilms, 1970. 1 microfilm reel : positive ; 35 mm. <br/>Microfilm. Ann Arbor, Mich. : University Microfilms, 1970. 1 microfilm reel : positive ; 35 mm. <br/>Microfilm. Ann Arbor, Mich. : University Microfilms, 1970. 1 microfilm reel : positive ; 35 mm. <br/>Microfilm. Ann Arbor, Mich. : University Microfilms, 1970. 1 microfilm reel : positive ; 35 mm. <br/>Microfilm. Ann Arbor, Mich. : University Microfilms, 1970. 1 microfilm reel : positive ; 35 mm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor supply -- Malawi.--Labor supply -- Malawi.<br/>Agricultural laborers -- Malawi.--Agricultural laborers -- Malawi.<br/>Tumbuka (African people)
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Henga Valley (Malawi) -- Social conditions.--Henga Valley (Malawi) -- Social conditions.