Minimal Spanning Tree [H] (Algorithm A422) CACM April, 1972 Whitney, V. K. M. spanning tree, minimal spanning tree, maximal spanning tree 5.32 CA720410 JB January 31, 1978 12:36 PM 2363 5 2363 2363 5 2363 2363 5 2363 2641 5 2363 2363 6 2363