Eleventh International Conference on Raman Spectroscopy / Twelfth International Conference on Raman Spectroscopy : International Conference on Raman Spectroscopy International Conference on Laser Spectroscopy Fourth international conference on Asbestos / International Conference on Atomic Spectroscopy Fourth international conference on ferrites / International Conference on Mossbauer Spectroscopy Joint international conference on creep : 11th international conference on fluid sealing