00426nam a2200157Ia 4500008004100000020001500041082001800056100002700074245004000101260004500141300000800186650001800194650001800212653001200230653002600242170901s1973    xx            000 0 und d  a0070043922  a574.028bB40T  aBehringer, Marjorie P. 0aTechniques and Materials in Biology  aNew YorkbMcGraw-Hill Book Companyc1973  a600  aLife sciences  aPure Sciences  aBiology  aLaboratory techniques