APA

Kürsten M, . (1990). Raw Materials for New Technologies.Proceedings of the Fifth International Symposium,held in Hannover,Fed. Rep.of Germany,at the Federal Institute for Geoscien- ces and Natural Resources October 19-21,1988. Stuttgart: E.Schweizerbart'sche.

Chicago

Kürsten M, . 1990. Raw Materials for New Technologies.Proceedings of the Fifth International Symposium,held in Hannover,Fed. Rep.of Germany,at the Federal Institute for Geoscien- ces and Natural Resources October 19-21,1988. Stuttgart: E.Schweizerbart'sche.

Harvard

Kürsten M, . (1990). Raw Materials for New Technologies.Proceedings of the Fifth International Symposium,held in Hannover,Fed. Rep.of Germany,at the Federal Institute for Geoscien- ces and Natural Resources October 19-21,1988. Stuttgart: E.Schweizerbart'sche.

MLA

Kürsten M, . Raw Materials for New Technologies.Proceedings of the Fifth International Symposium,held in Hannover,Fed. Rep.of Germany,at the Federal Institute for Geoscien- ces and Natural Resources October 19-21,1988. Stuttgart: E.Schweizerbart'sche. 1990.