nkysdb: なかよし論文データベース
EFFENDI W. 様の 共著関連データベース
+(A list of literatures under single or joint authorship with "EFFENDI W.")
共著回数と共著者名 (a list of the joint author(s))
発行年とタイトル (Title and year of the issue(s))
1986: Geologi Gunungapi Lamongan, Lumajang, Jawa Timur 1:50, 000 
Geologic Map of Lamongan Volcano, Lumajang, East Java 1:50, 000 
1986: Peta Geologi Komplek Gunungapi Dieng, Jawa Tengah 1:50, 000 
Geologic Map of Dieng Volcano Complex, Central Java 1:50, 000