00275nam a2200109Ia 4500008004100000020001800041082001500059100001600074245002700090260004000117300000800157190710s9999    xx            000 0 und d  a81-7041-395-8  a371.3 T17P  aChand, Tara 0aPrinciples of teaching  aNew DelhibAnmol Publicationsc1994  a266