一般注記Dates of publication and/or sequential designation: Jan. 1, 1973-Dec. 31, 1975
Physical description for original version: 1 v. : 26 cm
原資料等に関する注記原資料の出版事項: City of Washington : Smithsonian Institution Press, 1977
Continues: National Zoological Park 18-month report (National Zoological Park (U.S.) .)
Continued by: National Zoological Park annual report (National Zoological Park (U.S.) .)
SUPTDOC番号: SI 1.1/2: 973