Dhatupatha: Pdf Better
The term Dhatupatha (धातुपाठ) breaks down into Dhatu (root) + Patha (reading or recitation). It is not a grammar manual per se, but a classified list of verbal roots compiled by the ancient grammarian (c. 4th century BCE) as an appendix to his magnum opus, the Ashtadhyayi .
: A more critical review on Academia.edu notes that while expensive, some editions may not offer information significantly different from cheaper Indian reprints. It warns that certain etymological derivations in some English-translated versions can be specious. dhatupatha pdf