Hi
just found this on Amazon free kindle book very basic info but worth a look
http://www.amazon.co.uk/gp/product/B00WJ6FK8A?cor=GB&priceChange=1&ref_=clair_cor__1
Chas
just found this on Amazon free kindle book very basic info but worth a look
http://www.amazon.co.uk/gp/product/B00WJ6FK8A?cor=GB&priceChange=1&ref_=clair_cor__1
Chas
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