Bds field guide to disease

I looked at it on the DSC1 course, it seemed well laid out but I wasn't paying £15 for it.

Tbh, I nearly choked when the course instructor announced the price.
 
BDS guide lives in the car, handy little book and well worth the money, don't revere to it very often but as an aide memoire, I can't fault it.
 
Good little booklet, I’ve used it at least once real time in the field under torchlight when it was humping down with rain.
 
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