This is the web site for Tourism Management, a journal for professional tour operators.
This online issue of the Journal of Tourism History invites submissions for the John K. Walton prize.
This is the site for the Journal of Tourism and Cultural Change.
This is Wikipedia's excellent article on tourism.
This is the U.N. Population Division article on population policy. "The Population Policy Section is responsible for global monitoring of Government views and policies on key population issues, such as population size and growth, fertility and family planning, population ageing, maternal health, HIV/AIDS, spatial distribution and urbanization, and international migration."
This is the Population Council's site on population policy. "Council research documents the link between population and development and explores the consequences of population growth on societies, families, and individuals."