522,868 INTERNATIONAL Second International Camag Symposium on Advanced Thin-Layer Chromatography and Electrophoresis, New York, N.Y.,November 28-30, 1972. Symposium chairman Justus G. Kirchner. Special issue. Amsterdam 1973 Elsevier Scientific Publishing Company 8° -7 Journal of Chromatography vol. 82, no 1. dz, VIII, 261, nlb. 1, 227-272, IIustr.)