The late Paul Wolf was, the original author of this book.
He was a true gentleman and one of the greatest surveyors, phogrammetrists and mathematicians of all times. His depth of knowledge along with an absolute command of simple English make his books in elementary surveying, photogrammetry, and adjustment computations the best there is. They will stay, in my opinion, for many generations to come.
I really commend Professors Chuck Ghilani and Bon Dewitt for keeping the legacy of prof. Wolf alive. Thank you Chuck and thank you Bon.