00282nam a2200109Ia 450000500170000000800410001708200150005810000190007324500340009226000380012630000080016420260224041015.0260224s9999||||xx |||||||||||||| ||und||  a672.36 BUL  aBullens, D.K.  0aSteel and its heat treatment   aNew York: John Wiley & Sonsc1948  a289