> Shouldn't this be OT? No (IMHO) As I said - >> And quite *clearly* it deals with engineering !!! :-) I carefully considered and placed it in "Everything Engineering" as it is just that - practical shirt sleeves workaday application of knowledge at the coal face. Stuff engineers can rejoice in the beauty of even if its not of primary interest. That's my theory anyway :-). Seriously. I'm happy for admins to comment either way as a guide on similar stuff. >> "Essential Drugs - Practical Guidelines" manual >> >> >> http://www.msf.org/source/refbooks/msf_docs/en/Essential_drugs/ED1.pdf >> >> 3.2 MB 344 page pdf. Found while wondering about Vitamin B1(and no, I don't drink alcohol :-) RM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist