The idea of this NATO school was born during philosophical discussions with Dr Brevard on the present and future of NMR during a night walk under the palm trees in Biskra during a seminar held in this oasis. It was clear for us that the recent progress in the field of NMR, especially inverse spectroscopy and the development of MAS, was opening new perspectives for chemists. We realised also that organometallic and inorganic chemists were not clearly informed about the potentialities of all the new methods. NA TO, with its summer schools, was offering a good opportunity to propose to the chemical community a session where those problems would be largely developped. This School is then the prolongation of the two previous ones: Palermo in 1976 on "the less receptive nuclei" and Stirling in 1982 on "the multinuclear approach to NMR spectroscopy" . It was divided into two sub-sessions: NMR in the liquid state and NMR in the solid state. This is reflected in the book organization. As indicated by the title of this School, we were mainly concerned with the methodological aspects of multinuclear NMR. If many examples are given, they appear only as a support for the understanding of the theory or in explanation of some practical aspects of the different experiments. Each domain is introduced by a lecture which presents selected examples.

Inhalt
Liquid-State.- I Chemistry in a Spin: Multinuclear Magnetic Resonance.- II The Rotating Frame and the Vector Model.- III Application of the Vector Model in the Rotating Frame to some Simple Sequences.- IV Relaxation Phenomena.- V Various Operator Formalisms for the Description of Pulse Methods in NMR.- VI Polarization Transfer INEPT, DEPT, NOE.- VII Two Dimensional NMR Spectroscopy Basic Principles.- VIII Phase Cycling Procedures in Multiple Pulse NMR Spectroscopy of Liquids.- IX Inverse Spectroscopy.- X Some Aspects of Multiple-Quantum NMR.- XI Structural Aspects of Spin-Spin Coupling in Multi-NMR Spectroscopy.- XII The Relation Between Chemical Shift and Structure.- XIII Shaped Pulses and their Applications in One and Two-Dimensional NMR Experiments.- Solid-State.- XIV Analytical Chemical Applications of High-Resolution Solid-State NMR Spectroscopy.- XV NMR of the Solid-State: Basic Principles.- XVI Relaxation and Double-Resonance in Solid-State NMR.- XVII Magic-Angle Spinning.- XVIII Two-Dimensional Dipolar-Chemical Shift NMR in Rotating Solids.- XIX High-Resolution Spectra of Abundant Spins: CRAMPS.- XX NMR of Adsorbed Species and Surfaces.- XXI NMR of Quadrupolar Nuclei in the Solid State.- XXII Interpretation of Quadrupolar Powder Spectra: Static and MAS Experiments. (Tutorial Session).- XXIII High-Resolution Solid-State NMR Investigations of the Lattice Structures of Zeolite Catalysts and Sorbents.- Posters.- Participants.