00302nam a2200109Ia 450000500170000000800410001708200160005810000170007424500480009126000450013930000080018420260225050904.0260224s9999||||xx |||||||||||||| ||und||  a631.372 BAR  aE.L. Barger  0aTractors and their power units 2nd edition   aNew York: John Wiley & Sons. Inc. c1963  a524