@misc{indiciae11e2e967742b, title = {Controls on the composition of fluvial sands from a tropical weathering environment: Sands of the Orinoco River drainage basin, Venezuela and Colombia}, author = {M. J. Johnsson and R.F. Stallard and N. Lundberg}, year = {1991}, doi = {10.1130/0016-7606(1991)103<1622:cotcof>2.3.co;2}, url = {https://pubs.usgs.gov/publication/70015064}, note = {Source identifier: 70015064} }