@book{74021,
	author = {R. Laube and J. Wiefels},
	title = { Schaeffers Grundriß des Rechts und der Wirtschaft. Abteilung II : },
	publisher = {Verlag W. Kohlhammer ; Düsseldorf,},
	year = {1970.},
	address = {Stuttgart : },
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B10-11896.pdf}
}