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Inherent Problems and Factors Affecting Product Development of the Manufacturing Industry, Saga Prefecture. BULLETIN OF JAPANESE SOCIETY FOR THE SCIENCE OF DESIGN. 1998. 44. 6. 61-70
Inherent Problems and Factors Affrcting Product Development of the Furniture Industry in the Morodomi District, Saga Prefecture. BULLETIN OF JAPANESE SOCIETY FOR THE SCIENCE OF DESIGN. 1997. 44.2, 67-76