A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
The Sudan is a country of Africa of nearly 1 million square miles (Fig. 1) with a population of 16 million people and lying between 3 and 21° latitude. In the tropical climate over 100°F can be recorded during any month of the year.