00329nam a2200109Ia 4500008004100000020001800041082001500059100002000074245007700094260004000171300000800211190710s9999    xx            000 0 und d  a81-7488-661-3  a371.26 C39  aChauhan, Poonam 0aAchievement in science with special reference to over and underachievers  aNew DelhibAnmol Publicationsc1997  a205