Schreider H. Exploring the Amazon / Helen Schreider, Frank Schreider ; With Photographs by the Authors ; Foreword by Gilbert M. Grosvenor. — Washington, D.C. : National Geographic Society, 1970. — 207 p.
Анотація: Like the sinious veins of an enormous leaf, the tangled tributaries of the Amazon writhe across an area two-thirds the size of the United States. One-fifth of all the river water in the world spills from the Amazons mouth into the Atlantic Ocean. Exploring the Amazon, a stirring account of a courageous couples adventures, captures in text and photographs the awesome gradeur of the worlds mightiest river.