- Welcome to the complete collection of BD Chaurasia Human Anatomy All Volumes, Vishram Singh Textbook Of Anatomy All Volumes and Snell's Clinical Anatomy. This page is designed to help occupational therapy students and professionals easily access summaries, key changes, and download links (for educational use only) of each Edition and Volume. Access all major editions of BD Chaurasia Human Anatomy, Vishram Singh Textbook Of Anatomy and Snell's Clinical Anatomy textbooks in one place. Free PDF links provided for educational use only.