In this astute book, anthropologists Alexia Bloch and Laurel Kendall recount their 1998 journey in the footsteps of Franz Boas and the ambitious Jesup North Pacific Expedition (1897-1902), interweaving their own travels with history and ethnography. It's an absorbing tale of places and cultures in eastern Siberia and the Pacific Northwest. With chapters on travels in Chukotka, Magadan, Anadyr, Khabarovsk, Petropoavlovsk and Esso in Kamchatka's central volcanic range.  (SIB39, $29.95)