Duvel, G.H. (Gustav Heinrich)2013-09-072007-12-212013-09-072000-09-012007-12-212007-12-21Terblanche SE, 2000, Groepfunksionering in landbou-ontwikkeling : die rol van leierskap, PhD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/30495 >H705/thhttp://hdl.handle.net/2263/30495Thesis (PhD (Agricultural Extension))--University of Pretoria, 2007.Please read the abstract in the section 00front of this document© 2000 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.Social groups agricultural development projectsLeadership agricultural development projectsUCTDThesishttp://upetd.up.ac.za/thesis/available/etd-12212007-080350/