POS shisutemu to dēta katsuyō no kenkyū
Subtitle: igyōshu kōryūgata kyōdō kenkyū hōkoku : '85 POS (A) Kenkyūkai hōkokusho
Publisher: Sofuto-ka Keizai Sentā
Published: 1986
Place of publication: [Tokyo]
Language: jpn
Number of pages: 134