??????????????? ????????????
?????????2???21????? (????????????? ???)???????????????????�????????�??????????,????????????????????9????????,???????
???????????????????,????????,??????????????????,??(????????????????)??????????????????????

??????,????????,??,???????????????????????????,?????????????????,???(????????????)??
???,??????????????????????????????Fay E. Clark???????????????,??????????????3?????2?????????????????4????????????????(????),?????????????????????,??????????????????????,?????,?????30?????
????????????,3??????,???????????????????????????;1??,??,???????????,???????5??????,??????????????,?????????;?????????
????????????????????,?????,???????????????????,??????????????????????????????????????,??????,??????????????????(?)

??
???:????