00325nam a2200121Ia 4500008004100000082001400041100001700055245004200072260004100114300001000155600001600165650002200181140224s9999    xx            000 0 und d  a025.85 L6  aMehtha, S.P.  aArt and Science of book preservation.  aPunebNational Defence Academyc1976  a179p.  aS.P. Mehtha  aBook preservation