7-1 • CI Z • taught m ny probl m- lving - te hnique. The m th ds u all of th m rnbers' input nd foIl 1 i 1 format. Com- en und lution h been re ched th t m pre nt their to upper and middle m n gem nt. ith man ment pproval the lution I imple- mented. On of th b the to do Ii y CITcl r I P r and using tools. Geogriphic Society t am dep rtm nt 10 hourly DO m ing ational J97 - ov. 6,' C Iter's Hell' - The gey rs and hot spring of Yello tone ational Par are spec cularly di pl yed in this inter vi of one of n ture's phenomena. The "Col­ ter of the title refer to John Colter (1775-1813) ho may h been th first bite man to e thi region. ho nix Films 1973 - of • I nt t their or­ O fice ill Green ich US EGO { OVER SO STORES FOR YOUR SHOPPI G CO VE IE CE I A SAFE A 0 CLI ATIZED T OSPHERE HEELCHAIRS-STROLLERS-LOCKERS VAILABLE T THE I FOR ATIO BOOTH o •• p. .