00501nam a22001457a 4500008004100000040005500041080001900096100002000115245007400135260006700209300001300276650003600289653001500325653001500340230510b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a546.718.06bK9  aLavrukhina, A K  aAnalytical chemistry of technetium, promethium, astatine and francium  aJerusalem: bIsrael Program for Scientific Translation, c1969  ax, 262p.  aRadioactive substances-Analysis  aPromethium  aTechnetium