Chūshō kigyō ni okeru jōhō katsudō no jissen
Subtitle: jōhō wa naze jūyō na no ka
Series: Chūshō kigyō no tame no jōhō katsuyō shirīzu -- no. 24
Publisher: Chūshō Kigyō Jōhō Sentā
Published: 1985
Place of publication: Tōkyō
Language: jpn
Number of pages: 83