abstract in the current decade the third world's countries are using of development rural tourism approach to improve indexes of development. in iran due to multiplicity of rural area using of this strategy is important. analysis the condition of host area for achieving positive tourism impacts is necessary. in this paper, the challenges and opportunities on developing rural tourism is distingu...

global aquaculture production has more than tripled during the last 15 years, and aquaculture is expected to account an increasing share in global seafood production. there are large differences among countries in the rate of growth and development of aquaculture. this review tries to explain the progress and problems of aquaculture during three last decades in iran. the total production of ira...

rapid population increase, expanding urbanization, lack of employment opportunities, particularly in agriculture, population pressure on natural resources and failing to create and expand medium and large industries, especially in developing countries led industrialization strategy that these countries from the mid-decade villages 1970 in their development programs to consider. this year emphas...