The transportation and marketing implications of sand and gravel and its environmental impact in Lome-Togo
Kossi Ayenagbo, Josphert Ngui Kimatu, James Gondwe and Wang Rongcheng*
College of Urban and Environmental Sciences, Northeast Normal University, Renimin Street 5268, Changchun, Jilin Province, Post Code 130024, China.
Email: [email protected]