[1]
Nikolaiev, K.D., Isaienko, V.M. and Zelenko, Y.V. 2009. RESOURCE-SAVING PROCESS AND RESOURCE-SAVING TECHNOLOGIES IN THE FIELD OF ECOLOGICAL TOURISM. Science and Transport Progress . 28 (Aug. 2009), 77–81. DOI:https://doi.org/10.15802/stp2009/13582.