00315nam a2200121Ia 450000500170000000800410001704100080005808200160006610000230008224500270010526000520013230000090018420260720174622.0260720s2006    xx            000 0 und d  aeng  a370.15 SKIE  aSkinner, E Charles  aEducational psychology  aNew DelhibPrentice Hall Of India Pvt Ltdc2006  a755p