The Firebird Rocket

In June, during my Hardy Boys nostalgia trip, I reread The Firebird Rocket. I got this book from John Menzies in 1979. It was written by Vincent Buranelli. In this story, Frank, Joe and Chet are on the trail of a missing scientist, and their search takes them to Australia. I think this was one of the best in the series. The plot is one of the few that I remembered clearly after such a long time.