Contents: A.E. Bennett, R.G. Griffin, S. Vega, Recoupling of Homo- and Heteronuclear Dipolar Interactions in Rotating Solids.- B.F. Chmelka, J.W. Zwanziger, Solid-State NMR Line Narrowing Methods for Quadrupolar Nuclei: Double Rotation and Dynamic-Angle Spinning.- H. Eckert, Structural Studies of Noncrystalline Solids Using Solid-State NMR. New Experimental Approaches and Results.