Kyōsōba Sōgō Kenkyūjo (Japan)

• Kyōsōba Sōgō Kenkyūjo 50-nen no ayumi =
• Kyōsōba Sōgō Kenkyūjo 50-nen no ayumi =
• Kyōsōba Sōgō Kenkyūjo gyōsekishū (Heisei 2-nen--Heisei 20-nen)