1 Msaki, H.,; Evarist, 1P.; Emmanue, 1M.; Silayo, 2C.
 (National Institute of Transport, 2018)
The aim of the study was to assess the implementation of Open Performance Review Appraisal 
System (OPRAS) at the department of immigration based in Dar es Salaam Tanzania. Questionnaires 
and interviews were used to ...