List of Articles Leech Open Access Article Abstract Page Full-Text 1 - The Analysis of Ebn Hesam’s Poetry Structure based on Jeffery Leech’s Theory Fereshteh Khavari Habib Jadidol Eslami Behruz Rumiani Open Access Article Abstract Page Full-Text 2 - Effects of Different Maintenance Systems and Density on Behavioral Responces of Young European Medicinal Leeches, Hirudo Medicinalis Morteza Yousefi Chahardehi Aleksandr Aleksoiech Nikishov Behroz Abtahi Open Access Article Abstract Page Full-Text 3 - The effect of two environment water - moss and peat moss soil on the number of cocoons, the weight of the cocoon and the number of casualties of oriental leech (Hirudo orientalis). Hamidreza Bidmal mohammad Sodagar Open Access Article Abstract Page Full-Text 4 - Checking the norms in the Beyidel Dehlavi’s Quatrains Abdolreza Modarreszadeh Zainab Khoshvatan Mohammad Salamatian Open Access Article Abstract Page Full-Text 5 - “Selecting target literary texts , a solution for raising perception in Elementery School Students” Golbarg Zehni Arsalan Golfam Open Access Article Abstract Page Full-Text 6 - Identifying the effective factors on the strategic plan of internal product sales of knowledge-based companies (case study: medical leech breeding) مینا سرشار مجید فتاحی نیلوفر ایمان خان Open Access Article Abstract Page Full-Text 7 - Clinical report of still-birth in a goat due to leech infestation یعقوب Gharedaghi وحید Elmi-Razlighi مهدی Yeganehzad Open Access Article Abstract Page Full-Text 8 - Protective and Therapeutic Effect of Leech Saliva on Spermatogenesis Parameters and Secretion of LH, FSH and Testosterone Following Busulfan Administration in Male Wistar Rats Tayebeh Sadeghi Seyed Ebrahim Hosseini Mohammad Amin Edalatmanesh Mohamad Khaksari