Dear brother,
Thanks for guidance on the uploadingit live link.
This book is authored by Bleier. It must be good.
I am referring to a similar book titled "Fan Design and Operation of centrifugal, axial and cross flow fans" by Dr. Ing.Bruno Eck, published by Pergamon first in 1972.
I am requesting all member brothers to try for this book title.
Thanks once again for the information and help.