1.
Water-Quality Reconnaissance of Laguna Tortuguero, Vega Baja, Puerto Rico, March 1999-May 20...
by Soler-Lopez, Luis, Guzman-R...
ISBN: 9781287190042
List Price: $15.75
2.
Determinacion de caudal y tecnicas de muestreo en agua superficial, Determination of streamf...
by Ferdinand Quinones-Marquez,...
ISBN: 9781288870097
List Price: $17.75