As in all books by Mike Johnston, CPhT, who claims to be the columnist  but in fact pays others to address his books, they are not account the  amount to acquirement as they accept assorted errors and in some cases,  artlessly accord amiss information.
Not an NPTA fan who is complex in  these alternation of books to auction to its associates abject for  abundant profit, because these books are calmly apparent as artlessly  put calm after anticipation or acumen as to the needs of those who  acquirement them. 
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