[PAR] [TLE] Otto Hahn [SEP] Otto Hahn, {'1': ", '2': ", '3': ", '4': "} , {'1': ", '2': ", '3': 'ForMemRS', '4': "} (8 March 1879 – 28 July 1968) was a German chemist and pioneer in the fields of radioactivity and radiochemistry.  He was exclusively awarded the Nobel Prize in Chemistry in 1944 for the discovery and the radiochemical proof of nuclear fission.  He is referred to as the father of nuclear chemistry. [PAR] [TLE] Clara Lieber [SEP] Clara Lieber (July 10, 1902 – December 14, 1982) was an American chemist known for her work with Otto Hahn on discovering fission, and her discovery of several isotopes of strontium and barium.
[PAR] [TLE] Otto Hahn [ SEP ] Otto Hahn , { ' 1 ' : " , ' 2 ' : " , ' 3 ' : " , ' 4 ' : " } , { ' 1 ' : " , ' 2 ' : " , ' 3 ' : ' ForMemRS ' , ' 4 ' : " } ( 8 March 1879 – 28 July 1968 ) was a German chemist and pioneer in the fields of radioactivity and radiochemistry . He was exclusively awarded the Nobel Prize in Chemistry in 1944 for the discovery and the radiochemical proof of nuclear fission . He is referred to as the father of nuclear chemistry . [PAR] [TLE] Clara Lieber [ SEP ] Clara Lieber ( July 10 , 1902 – December 14 , 1982 ) was an American chemist known for her work with Otto Hahn on discovering fission , and her discovery of several isotopes of strontium and barium .
Clara Lieber worked with the German chemist in the fields of what two disciplines?
Clara Lieber worked with the German chemist in the fields of what two disciplines ?
radioactivity and radiochemistry
radioactivity and radiochemistry