If you have a physical copy (the 2010 DC Books 10th edition is the gold standard), you can scan it yourself.
Mayyazhippuzhayude Theerangalil ( On the Banks of the Mayyazhi River ) is a landmark in Malayalam literature, blending magical realism with the political history of Mahe (Mayyazhi), a former French colony in Kerala. The PDF is sought after because print editions can be hard to find outside Kerala. mayyazhippuzhayude theerangalil pdf better