00295nam a2200109Ia 450000500170000000800410001708200150005810000210007324500360009426000470013030000080017720260225051052.0260224s9999||||xx |||||||||||||| ||und||  a660.28 GYN  aEric S. Syngell  0aApplied chemistry for engineers  aIslamabad: National Book Foundation c1984  a359