The world's population is growing at an unsustainable rate. From a baseline ?gure of one billion in 1800, global population is predicted to exceed nine billion by 2050 and 87. 8% of this growth will...
Agricultural production is the practice of growing crops for food, fuel and fiber. Agronomists depend on optimum conditions for plant growth. Soil fertility is one of the key aspects of agriculture...
In this groundbreaking work on American public policy and human fertility control, policies and practices of the 70s, 80s, and 90s are reviewed and analyzed in each of the fifty states. Arguing that...
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks,...