@BOOK{ Book!D - 68367707,
AUTHOR = "by Donald Dale Jackson and the editors of Time-Life Books",
TITLE = "Underground worlds",
LIBRARY= "كتابخانه مركزی و مركز اطلاع رسانی دانشگاه شاهد",
SUBJECT = "Caving- History- 19th century,Caving- History- 20th century,Caves",
URL = "/book/68367707/Underground-worlds/"}