| 1. | On Oscillatory Behavior of the Nonlinear Differential Equation with Deviating arguments | |
| Pages 1-9 | ||
| Mervet. A. A. El-Debrky; F. Hassan | ||
| 2. | Isolation and Identification of Bacteria in Sarir Refinery Wastewater in Libya | |
| Pages 10-23 | ||
| Farag M. Saieb; Abdelhamid H. Elghazawani | ||
| 3. | ON STRONGLY FSβ-IRRESOLUTE MAPPINGS | |
| Pages 10-15 | ||
| R.K. SARAF; R.K. POURANIK | ||
| 4. | Preconcentration of Bismuth in Water Samples Prior to Determination by Atomic Absorption Spectrometry | |
| Pages 1-9 | ||
| Wifky S.A. El-Naggar | ||
| 5. | Strongly θ-continuous mappings between bitopological ordered spaces | |
| Pages 16-25 | ||
| A.A. Nouh; M.E. EL-Shafei; M. Abo-ELhamayel | ||
| 6. | Hydrogeochemistry and origin of fluoride in groundwater of Hidhran & Alburayhi Basin, northwest Taiz City, yemen | |
| Pages 10-20 | ||
| Abdulmohsen saleh Al-Amry | ||
