A preliminary water quality study of the Rio Sierpe and its tributaries (Costa Rica)
https://stroudcenter.org/wp-content/uploads/publication-e1554320152730.jpg 350 210 Stroud Water Research Center Stroud Water Research Center https://stroudcenter.org/wp-content/uploads/publication-e1554320152730.jpgArscott, D.B., W. Eldridge, and B.W. Sweeney. 2010. Prepared for the Blue Moon Foundation. Stroud Water Research Center, Avondale, Pennsylvania.