United States Geological Survey | Ordnance Survey | Coast Survey | Biological specimen | British Geological Survey | Biological membrane | Sloan Digital Sky Survey | Foreign Intelligence Surveillance Act | Geological Survey of Canada | Marine Biological Laboratory | Archaeological Survey of India | survey | International Union of Biological Sciences | Dominion Land Survey | California Geological Survey | South Georgia Survey | Convention on Biological Diversity | biological pest control | Biological classification | U.S. National Geodetic Survey | Salk Institute for Biological Studies | mass surveillance | Biotechnology and Biological Sciences Research Council | Biological warfare | Max Planck Institute for Behavioral Physiology | Journal of Biological Chemistry | Great Trigonometric Survey | Geological Survey of India | Biological pest control | Behavioral Analysis Unit |
Results from studies in 2006 by Gayet et al., Magis et al., and the Biological Behavioral Surveillance Survey conducted in Mexico showed that HIV prevalence rates among male sex workers were 25 percent in Monterrey, 20 percent in Guadalajara and Mexico City, and 12 percent in Ciudad Nezahualcóyotl.