This hardcover book is a botanical set titled "Freshwater Algae of the United States" written by Gilbert M. Smith. Published in 1950 by McGraw-Hill Companies, T.H.E., it is a nonfiction narrative type book that covers the topic of life sciences and botany. The book is richly illustrated and is an excellent addition to any science lover's collection. It is a second edition, written in English, with a publication year of 1950. This book is a unit type and meets the highest standards of quality. It is a must-have for anyone interested in the fascinating world of freshwater algae in the United States.