@book{ Solr-EB000696417, title = {Rechnen in der Chemie : Erster Teil Grundoperationen — Stöchiometrie}, author = {Wittenberger, Walter}, address = {Berlin, Heidelberg}, publisher = {Springer Berlin Heidelberg}, year = {1968}, edition = {7th ed. 1968}, isbn = {9783662400753}, url = {https://doi.org/10.1007/978-3-662-40075-3?nosfx=y} }