Tác giả: Petty

Chris Petty has written a book that covers much of the unheralded research into high-speed flight that helped set the stage for human spaceflight. I recommend this book to anyone who has an interest …

Chris Petty has written a book that covers much of the unheralded research into high-speed flight that helped set the stage for human spaceflight. I recommend this book to anyone who has an interest …