$1K7o'2>!7y!KH'_K'Xm!04!BX!JH(B. 3$1!C['VJ(B2005s - $1!5t!M1!?b!09'Q[s (NATIONAL GEOGRAPHIC SOCIETY, 2005)
Keywords: $1!Cd!3U(B--$1K7o'2>!7y!KH'_Ks