Immunoassays for the 80s 53 The wide scope of surface 9789401063968 The wide scope of surface phenomena included in this study is dealt with from a firmly established standpoint of solid state physics and the theory of chemical structure and reactivity research in this feld has increased impressively and has become an established part of research and science in osteology Analyses for naturally occurring biological substances or administered materials have been with us for many years These methods can be very simple in terms of technical procedures and can usually be performed on minute samples of biological fluids factors which have ensured their ready acceptance in most laboratories