What are some good references on conductometry as an analytical technique?
I am certainly no expert in the field (in fact, I know nothing about it) but I imagine this 225+ page text will prove to be useful for you:
Oscillometry and Conductometry: International Series of Monographs in Analytical Chemistry, Volume 21 by E. Pungor is available via Google Books. You might be able to find a used copy of this book somewhere (it was published in 1965).