00301nam a2200121Ia 4500008004100000082001300041100001900054245002300073250001700096260003400113300001200147650002000159140224s9999    xx            000 0 und d  a025.5 M0  aKrishan Kumar.  aReference service.  a2nd rev. ed.  aGhaziabad (U.P.)bVikasc1980  ax,444p.  aLibrary science