L.G. Raisz and G.A. Rodan, Embryology and Anatomy.M.J. Glimcher, The Nature of the Mineral Phase in Bone: Biological and Clinical Implications.J.T. Potts, Jr. and H. Juppner, Parathyroid Hormone and Parathyroid Hormone-Related Peptide in Calcium Homeostasis, Bone Metabolism, and Bone Development: The Proteins, Their Genes and Receptors.T.J. Martin, D.M. Findlay, J.M. Moseley, and P.M. Sexton, Calcitonin.M.F. Holick and J.S. Adams, Vitamin D Metabolism and Biological Function.R. Civitelli, K. Ziambaras, and R. Leelawattana, Pathophysiology of Calcium, Phosphate, and Magnesium Absorption.K. Hruska and A. Gupta, Disorders of Phosphate Homeostatis.M.-C. Monier-Faugere, M.C. Langub, and H.H. Malluche, Bone Biopsies: A Modern Approach.M. Uffmann, T.P. Fuerst, M. Jergas, and H.K. Genant, Noninvasive Assessment of Bone.C. Christiansen, C. Hassager, and B.J. Riis, Biochemical Markers of Bone Turnover.A.M. Parfitt, Osteomalacia and Related Disorders.M. Kleerekoper and L.V. Avioli, Osteoporosis Pathogenesis and Therapy.J.T. Potts, Jr., Primary Hyperparathyroidism.E. Slatopolsky and J.A. Delmez, Renal Osteodystrophy.G.M. Doherty and S.A. Wells, Jr., Surgical Treatment for Hyperparathyroidism.E.M. Brown, M. Bai, and M. Pollak, Familial Benign Hypocalciuric Hypercalcemia and Other Syndromes of Altered Responsiveness to Extracellular Calcium.M.A. Levine, Hypoparathyroidism and Pseudohypoparathyroidism.D.S. Ross, Bone Disease in Hyperthyroidism.F.R. Singer and S.M. Krane, Pagets Disease of Bone.N.H. Bell, Sarcoidosis and Related Disorders.S.R. Goldring and R.P. Polisson, Bone Disease in Rheumatologic Disorders.G.R. Mundy, Hypercalcemia of Malignancy.D.W. Rowe and J.R. Shapiro, Osteogenesis Imperfecta.M.P. Whyte, Skeletal Disorders Characterized by Osteosclerosis or Hyperostosis.C.Y.C. Pak, Kidney Stones: Pathogenesis, Diagnosis, and Therapy.F.H. Glorieux, G. Karsenty, and R.V. Thakker, Metabolic Bone Disease in Children.Subject Index.