TY  - BOOK
AU  -  Westergaard,Poul
ED  -  University College, Dar es Salaam. 
TI  -  Primary societies' marketing costs : :  a case study and some genera l remarks, mostly on efficiency / 
PY  - 1969///?
CY  -  Dar es Salaam : 
PB  -  University College, 
KW  -  Marketing
KW  -  Costs
ER  -