Researched and devised by Oliphant Jackson[?], MRCVS, the Jackson Ratio is a method of determining whether a tortoise, or a member of another chelonia species, is maintaining its optimum bodyweight, which is necessary for a successful hibernation
... Museum[?]
Hertfordshire
De Havilland Aircraft Heritage Centre[?], also known as Mosquito Aircraft Museum[?]
Verulamium Museum[?]
Lancashire
Astley ...