Alexander M. Cruickshank
Alexander M . Cruickshank ( December 13 , 1919 – June 10 , 2017 ) was an American chemist and long-serving director of the Gordon Research Conferences . 
<triplet> Alexander M. Cruickshank <subj> December 13, 1919 <obj> date of birth <subj> June 10, 2017 <obj> date of death