DUSHANBE, October 4, Asia-Plus  -- Six documents on bilateral cooperation between Tajikistan and Turkmenistan, including an agreement on friendship and cooperation inked by President Emomali Rahmon and his Turkmen counterpart, Gurbanguly Berdymukhamedov, were signed in Dushanbe today.   

The sides also signed agreements on main principles of trade-economic and scientific-technical cooperation, cooperation in the field of culture and arts, education cooperation, cooperation in the field of agriculture, and mutual protection of investments.