By Kristin McMurran
December 02, 1985 12:00 PM

For that obscure Serbo-Croatian phrase book try San Francisco book dealer Elaine Petrocelli and her stock of 4,000 travel books and maps. Among them: World Atlas of Golf ($14.98), The Eater’s Guide to Chinese Characters ($5.95), books on European train timetables, worldwide symphony schedules, how to rent a French farmhouse, and travel guides for the disabled. Petrocelli will help prepare your trip, but she won’t go with you unless you’re her husband, Bill. Biannual catalog. (57 Post St., San Francisco, Calif. 94104)