frisch, r. (1963). investment requirements under a given time shape of current final demand. National Planning Institute.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)frisch, ragnar. Investment Requirements Under a Given Time Shape of Current Final Demand. cairo: National Planning Institute, 1963.
MLA -ийн эшлэл (9 дэх хэвлэлт)frisch, ragnar. Investment Requirements Under a Given Time Shape of Current Final Demand. National Planning Institute, 1963.