Conference in the Matter of Pollution of the Navigable Waters of Dade County, Florida, and Tributaries, Embayments and Coastal Waters (1970 : Miami, Fla.)
Conference in the Matter of Pollution of the Interstate Waters of the Chattahoochee River and Its Tributaries--Georgia--Alabama (2nd : 1970 : Atlanta, Ga.)
Conference in the Matter of Pollution of the Interstate Waters of the Merrimack and Nashua Rivers and Their Tributaries (Massachusetts--New Hampshire) and of the Intrastate Portions of Those Waters Within the State of Massachusetts (2nd : 1970 : Bedford, N.H.)