Multiple resonance

[Introduction in lieu of Abstract] The development of magnetic multiple resonance during the past year has been characterized by the increasing use of two-dimensional methods (which are now accorded a sub-section to themselves) and by an enormous expansion of applications of the interproton and <sup>13</sup>C—{<sup>1</sup>H} nuclear Overhauser effects (NOEs) to studies involving polymers and biologically important macromolecules such as proteins