@book{118578,
	author = {Windelband, Wilhelm},
	title = {Theories in logic.},
	publisher = {Philosophical Library},
	year = {1961.},
	address = {New York},
	note = {The present essay appeared originally under thetiel Die Prinzipien der lokig in the Enzyhlopadie der philosophishen Wissene chaften.}
}