00667cam a2200205 a 45000010008000000030008000080050017000160080041000330400032000740500021001060820020001271000032001472450068001792500012002472600052002593000027003114400070003386500024004086500029004323997326BD-DhUL20140907165229.0820809s1927    enk           000 0 eng d  aNZOCbengcBD-DhULdBD-DhUL14aQA381b.V42 1927  219a517.28bVEI1 aVeblen, Oswald,d1880-1960.10aInvariants of quadratic differential forms /cby Oswald Veblen.  a1st ed.  aCambridge :bCambridge University Press,c1927.  aviii, 102 p. ;c22 cm. 0aCambridge tracts in mathematics and mathematical physics ;vno.24 0aDifferential forms. 0aDifferential invariants.