Structure and chemical reactivity of some medicinal plants extracts /
التركيب والفاعلية الكيميائية لمستخلصات بعض النباتات الطبية
Amira Saad Teleb Azab ; Supervised Abdelgawad Ali Fahmi , Mohamed Hani Moubasher
- Cairo : Amira Saad Teleb Azab , 2010
- 161P. : charts , facsimiles ; 25cm
Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Organic Chemistry
The historical materials held in archives constitues are important part of the cultural heritage of mankind and its conservation is of vital importance . These archive materials are made from different kinds of papers , e.g., cotton rags , wood pulp ...etc . It is know that paper ages, i.e. loses some of its original properties with time and with prolonged time periods it might be completely damaged