Japanese kniting/crochet books
I found the Japanese crochet book at a Japanese bookstore in San Francisco (in Japantown). They also had knitting books, so I picked up a stitch dictionary, too.
A number of pattern books included both knitting and crochet, and I gather it's common for people to know both. I never got the weird dichotomy here. I expect more knitters here will learn to crochet, which should fuel a growth in good crochet pattern books.