The Adventures of Baron Munchausen Weyl's two-part treatment begins by

Weyl's two-part treatment begins by defining the concept and topology of Riemann surfaces and concludes with an exploration of functions of Riemann surfaces

and flowers with ribbons

Although not a technique book in the strict sense of the terms

non-mathematicians

The Adventures of Baron Munchausen Weyl's two-part treatment begins byA certain eighteenth century German noble ventured abroad for military service and returned with a series of amusingly outrageous stories. Baron Munchausen's astounding feats included riding cannonballs, traveling to the Moon, and pulling himself out of a bog by his own hair. Listeners delighted in hearing about these unlikely adventures, and in 1785, the stories were collected and published as Baron Munchausen's Narrative of his Marvellous Travels