| Title | Author | Publication Date | Publisher | Type |
| Vertical Distribution And Inter-Relations Of Oxygen And Nutrients In The Arabian Gulf And The Gulf Of Oman In Summer | El Samra, M. I. [محمد ابراهيم السمرة]; El Gindy, A. A. H. | 1990 | Qatar University | Article |
| Lineament Analysis Of Qatar Peninsula Based On Landsat Imagery | El Kassas, I. A. [ابراهيم علي القصاص]; Ashour, M. M. | 1990 | Qatar University | Article |
| New Contributions To The Geology, Geochemistry And Tectonic Setting Of The Aswan Granites, Southern Egypt | Noweir, A. M. [عبد الحميد محمد نوير]; El Ela, A.M. Abu; Sewifi, B. M. | 1990 | Qatar University | Article |
| Phytochemical Studies On The Marine Algae Of Qatar, Arabian Gulf | Heiba, H. I. [حلمي اسماعيل هيبة] | 1990 | Qatar University | Article |
| Ecological Studies On The Bottom Fauna Of Lake Manala, Egypt | Khalil, Magdy T. [مجدي توفيق خليل] | 1990 | Qatar University | Article |
| Nitrogen fixation in polluted sea water of Alexandria coast, Egypt. | Dorgham, M. M. [محمد محمود درغام]; El-Samra, M. I.; Moustafa, TH. | 1990 | Qatar University | Article |
| الحرية الاقتصادية في الإسلام | يوسف ابراهيم يوسف | 1990 | Qatar University | Article |
| المد والجزر في السياسية البريطانية تجاه شبه الجزيرة العربية (2) بريطانيا بين عبد العزيز آل سعود والشريف حسين 1915 - 1920 | جمال محمود حجر | 1990 | Qatar University | Article |
| Synthesis, spectroscopic and thermal properties of some ionic polymers and polymeric complexes derived from phthaloyl bis (s-methylhydrazinecarbodithioate). | El Toukhy, Ahmed [احمد الطوخي] | 1990 | Qatar University | Article |
| Electrophoretic patterns of proteins and enzymes in paramphistomum (p.) Microbothrium and carmyerius gregarius | Al Nagdy, Sohair A. [سهير علي النجدي] | 1990 | Qatar University | Article |
