00341nam a2200097Ia 4500008004100000082001900041100004500060245009500105260003700200300000600237251120b        |||||||| |||| 00| 0 eng d  a511.6bOp61.TM  aThe Open University, Walton Hall (U. K.)  aTechnology/mathematicsb; a third level interfaculty course, graphs, networks and design /  aMilton Keynes:bThe Auth.,c1981  a