Reports and maps of the Geological Survey released only in the open files, 1967

Reconnaissance investigations of the discharge and water quality of the Amazon River

Hydrology for urban land planning--A guidebook on the hydrologic effects of urban land use

Bedded barite in East Northumberland Canyon, Nye County, Nevada

Estimated use of water in the United States, 1965

An atomic-absorption method for the determination of gold in large samples of geologic materials

Reports and maps of the Geological Survey released only in the open files, 1968

Index of surface-water records to September 30, 1967 - Part 4, St. Lawrence River basin

Index of surface-water records to September 30, 1967 - Part 9, Colorado River basin

Index of surface-water records to September 30, 1967 - Part 14, Pacific slope basins in Oregon and lower Columbia River basin

Index of surface-water records to September 30, 1967 - Hawaii and other Pacific areas

Direct-current arc and alternating-current spark emission spectrographic field methods for the semiquantitative analysis of geologic materials

Role of water in urban planning and management

Gold distribution on the sea floor off the Klamath Mountains, California

Metalliferous deposits near Granite Mountain, eastern Seward Peninsula, Alaska