This book, written by a member of the didactic Biot Club, goes far beyond where Biot ever though anyone would take his linear approximations. The information and approach is dated, and has no application, although the math is fun. As someone who is in the know has stipulated, "This book does not pass the smell test." A better approach is one that addresses real micromechanical processes, and actual phenomenological behavior of natural porous substances, made in a certified lab.