List of Articles Yeild Open Access Article Abstract Page Full-Text 1 - The Relationship assessment between the relative Valuation Techniques ( P E,P BV,P S ) and the Economic leverage having stock yield in Tehran Stock Exchange مهدی تقوی جواد آقامحمدی Open Access Article Abstract Page Full-Text 2 - The effect of zinc sulfate and gibberellic acid on gas exchange and white bean (Phaseolus vulgaris)performance under drought stress Arefe Abbasi Abbas Maleki Farzad Babaei Hossmand Safari Alireza Rangin 10.30495/iper.2021.679536 Open Access Article Abstract Page Full-Text 3 - Evaluation of morphological traits, yield and yield components of soybean genotypes (Glycine max L.) in Parsabad Moghan region Mehdi Aghighi Shahverdi F. Abassi Shahmersi B. Mamivand Open Access Article Abstract Page Full-Text 4 - Evaluation of some agronomic and phonological attributes in spring bread wheat genotypes S. Barani M. Shokrpour Open Access Article Abstract Page Full-Text 5 - Effect of amounts and time of methanol application on yield and yield components of spring safflower at Farahan A. A. Hakim Aval H. Madani M. Changizi Open Access Article Abstract Page Full-Text 6 - Effects of biologic firitilizers and manure on ecophysiological characteristics of peppermint (Mentha peperita L.). sayed Hoseni Naghavi pourang kasraei maysam Oveisi Open Access Article Abstract Page Full-Text 7 - Investigation of qualitative and quantities characteristics of some air cure tobacco cultivars in irrigation and dry farming condition Ezzatullah Malek Mohammad Nasri Nabi -Allah Nemati