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Summary of a Report on the Future Use of New Glasses for Health

------- p.210

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New Glass Research Topics

Glass Melting Experiments in Space Shuttle ------- p.215

Junji Hayakawa

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Inside Topics in Development of

Optical Fiber ------- p.221

Tatsuo Izawa

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Proceedings of the NGF Seminars31st Seminar on Existing State of Memory Disk Substrates

Present and Future of Optical and Magnetic Disks ------- p.224

Yoshinobu Mitsuhashi

The Poly-Carbonate Resin Substrate for Magneto-Optical Disk ------- p.230

Toshihumi Kawano

Present and Future of Metal Sputtered Disk ------- p.236

Fumio Syobuda

Glass Media for High Density Magnetic Recording ------- p.242

Jun-ichi Horikawa

lsao Suzuki

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Overseas Topics

12th University Conference on Glass ------- p.248

Sumio Sakka

7th International Workshop on Glasses and Ceramics from Gels ------- p.250

Hiromitsu Kozuka

Advances in Glass and Optical Materials ------- p.252

Zheng Haizing

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Domestic Topics

Optical Amplifiers and Their Applications '93 ------- p.255

Chie Fukuda

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Association News¡¿Notice for Members

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