@book{ Solr-94869, title = {The certification of polycyclic aromatic compounds. 4 : BCR reference materials nos 133-40.}, series = {Certification of polycyclic aromatic compounds ;}, author = {Karcher, W.}, editor = {Jacob, J.}, editor = {Karcher, W.}, editor = {Fordham, R. J.}, address = {Petten}, publisher = {Joint Research Centre}, year = {1983}, note = {englisch}, }