I just purchased a new book called Lone star field guide, Snakes of north america Eastern and Central regions.
It has all kinds of great info,including a venom potency table,detailed info on habitat and abundance in the wild.
Just thought i would share with all.
1.3Crotalus durissus..2.2Echis carinatus..1.1Micrurus fulvius..0.1Acanthophis wellsi..1.1Heloderma suspectum..NO VENOMOIDS!!!