00314nam a2200109Ia 4500008004100000020001800041082001500059100001600074245006000090260004600150300000800196190710s9999    xx            000 0 und d  a81-8457-391-6  a371.3078 P  aPathak, R P 0aShaikshik prodhyogiki avam kriyatmak anusandhan (Hindi)  aNew DelhibKanishka Publishers, Disc2012  a228