الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
INTRODUCTION
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Through history, civilization, performance1
the development of human beinq had been recordec
monuments and on stone articles, then by writi~
papyrus since 3000 years B.C. (tomb ot the visi
Sal<korahl, until about the ninth century A.D. w
making manufacture come in use.
In spite of the high modern technology in
knowledges in form of microfilm, still the old
(papyrus and paper-sheets) are recognized as c
trusted documents in many occasions. Both pap
sheets consist essentially of the biopolymer c
suffers several deteriorations by cellulolytic
By aging, paper becomes usually wrinkle
tle, and probably rotted: for all that, the pt
durability of paper were recognized as a seri
Although several modern inventions in pulp an
logy already achieved excellent advancement i
tion against chemical and physical deteriorat
various types of microorganisms still today c
ration and decaying of old manuscripts and be
ferent handling and storage conditions, ther•their shelf-time.The present work was attempted to investigate microorganisms
ordinary associated with deteriorated manuscripts,
documents and books from the view concerning :-
1- Their qualitative and auantitative distribution in atmosphere
of library and book stores.
2- Their environmental and nutritional demands, as well as
their physiological behaviour: and
3- Their roles in deterioration of cellulosic materials.
Besides, especial attention was given to study sensitivity
of cellulolytic microorganisms to the effect of some
pesticides. In addition, the effect of microbial infection
and pesticides on paper quality was studied. This was done
as attempt to facilitate the settling of suitable methods
necessary to prevent the harmful activities of these microorganisms
and subsequently to increase the shelf time of
paper articles.