engert, M. (1963). new trends in polytechnic education special reference to planning of manpower demand in the long run. National Planning Institute.
Tohutoru Kātū Chicago (17th ed.)engert, M. New Trends in Polytechnic Education Special Reference to Planning of Manpower Demand in the Long Run. cairo: National Planning Institute, 1963.
Tohutoro MLA (9th ed.)engert, M. New Trends in Polytechnic Education Special Reference to Planning of Manpower Demand in the Long Run. National Planning Institute, 1963.