00383nam a22001337a 450000500170000002000220001703500210003903700130006010000190007324500740009225000120016626000480017830000230022620180804111135.0  a812370643Xc40.00  aB-8389, B-008388  aDPLbENG  aAgrawal, O. P.  aPreservation of art objects and library materials /cby O. P. Agrawal  a2nd ed.  aNew DelhibNational Book Trust, Indiac1999  axi, 112p.c18 cms.