temaki katsuo sheets

Dear Maki, I'm looking for temaki katsuo sheets after I found some nice recipes in combination with them in Yukiyo Moriyama's "Quick and Easy Sushi Cookbook" (Tokyo 1983). Are they available outside of Japan? A friend of mine is now hunting them in Hongkong, until now without success. Thanks and congratulations to your great blog! It's really encyclopaedic. adalaj
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