There are around 20, 000 Mi-17 helicopters in circulation, including in Iran, Thailand, Malaysia, Colombia, Pakistan and Venezuela.

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In the autumn of 1954, not long after Pamela Schmidt's surgery, he lost six out of seven cross-circulation patients, including a 7-month-old baby.

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Poor circulation has a number of potential causes, including blocked arteries, varicose veins, liver or kidney disease, extreme cold, or as a side effect of certain drugs or medications.

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However, the judge said the information was in "wide circulation amongst those involved in the sport in question, including agents and others, and not just amongst those directly engaged in the sport".

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The papers were all published in well-known journals, including a second Nature paper, Nature Medicine, and 4 separate papers in Circulation.

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Whereas earlier copyright law, including international agreements like the 1886 Berne Convention, had been written to regulate the circulation of printed materials, the Rome Convention responded to the new circumstance of ideas variously represented in easily reproduced units by covering performers and producers of recordings under copyright.

UNESCO: UK National Commission for UNESCO - UNESCO Conventions, Recommendations & Declarations in the UK

Yet getting more books into circulation would clearly increase interest in his own craft, and lead to a better informed public, including his own friends and colleagues.

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