Do not go to the posted coordinates - the cache is not there and you will get wet!
A series of puzzle caches based on my favourite books. (See Chapter 1 for series information: GC8K52H)
In this third chapter:
Except otters again
Identify the book title from the clue provided above, and then discover the following information to decode the final coordinates from the equation:
Author's date of birth = AB/CD/EFGH
Year of book's first publication as a single work = WXYZ
Cache location (Tweezers may be required):
N51 (H+E)C.(D+W)(Z+E+G)A
W000 (G+H)(W+X).(B-H)(F/D)H