00306nam a22001097a 450000500170000000800410001702000180005824500230007626000380009994200440013799900150018120261105152357.0261105b        |||||||| |||| 00| 0 eng d  a9788171417865  amental retardation  bdiscovery publishing house c2004  alcceABUBAKAR musa Adam f5th November   c1395d1395