The book has entered the area of actual plane aviation and all of the prototypes that happened in the proccess and its interesting and i think i am going to use this how most of the early design were based on birds and wings or bats but never succeded because they didnt have the right materials but once the materials came along all of these design that looked like birds, bats, or inset came along to what we have now
— Dec 04, 2014 10:17AM
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