Still Waters, James Vance Marshall, 1982 1st edition, Hardback, very good condition of book and dustcover.
 
Description -
When Peter's goddaughter dies from rabies, he decides to devote his life to finding an antidote.  His researches eventually lead him to the rain forest of Borneo...In this clash of interest between the civilized and the primitive lie the seeds of misunderstnading and of tragedy.