Tác giả: Nathan J. Perkins

This new book presents topical research data in the study of the Black Sea, including the influence of the Danube River on the trophic functioning of coastal ecosystems in the north-western Black Sea …

This new book presents a wide spectrum of in-depth analysis detailing the U.S. space program including policy, the space stations, the shuttles and space exploration. The "space age" began …