00291nam a2200097Ia 4500008004100000040003800041100001000079245005700089250000600146260004100152211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aHegel 0aScience of logic tr by Johnston and Struthers: Voo 2  a2  bGeorge Allen and UnwinaLondonc1951