Resources by Paul D. Johnson

Title Available As Summary Date ID Author
Sustaining America's Aquatic Biodiversity - Freshwater Snail Biodiversity and Conservation
Six hundred fifty different species of snails are widely distributed across the streams, rivers, and lakes of North America. There are unique species associated with every type of aquatic habitat from the Canadian Arctic to the Everglades of Florida.
May 1, 2009 420-530