The PDF version of R.C. Chandna's book, "Population Geography," can be accessed through various online platforms. However, I was unable to provide a direct link to the PDF due to copyright restrictions. Nevertheless, I can suggest some possible sources where you can find the book:
Population geography is a subfield of geography that studies the relationships between population distribution, density, and characteristics, and the physical environment. It explores how population dynamics influence and are influenced by environmental factors. r c chandna population geography pdf link