1 These are research materials that are necessary to perform research. 2  All inventions, discoveries and knowledge can become research tools. 3  Universities and public research institutions have many resources that can be considered research tools.
Waldo, Kansas. Waldo is a city in Russell County, Kansas, United States. As of the 2010 census, the city population was 30. Contents.
At the time of the last census survey, the number of people of one race in Waldo, AR was 1,586. White Population in Waldo, AR. The estimated White population in the Waldo community is 634, which is 39.8 percent of the total population (The U.S. average is 75.10%). Black Population in Waldo, Arkansas.