Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Zylinderschmiermittel fuer mit schwefelhaltigen Treibstoffen eines Schwefelgehaltes von mindestens 0, 01 bis ueber 5 Gewichtsprozent betriebene Verbrennungskraftmaschinen
PERRY, JW AND KENT, ALLEN. Documentation and Information Retrieval; an Introduction to Basic Principles and Cost Analysis. Cleveland Western Reserve University Press; New York, Interscience Publishers, 1957. xii, 156 p. $5.00.