00290nam a2200097Ia 450000500170000000800410001710000250005824500390008326000620012230000080018420260413100710.0230516s9999||||xx |||||||||||||| ||und||  aMclean W.G Nelson EW 0aTheory & problem of engg mechanics  bN york schaun oulie series mcgrew hill book companyc1980  a408