Gaya APA

I., P, S. (1968). Volcanic activity and its implications on surface drainage the case of the Kelut volcano, East Java as an example . : .

Gaya MLA

I., PURBOHDIWIDJOJO;, SURYO,. "Volcanic activity and its implications on surface drainage the case of the Kelut volcano, East Java as an example". : , 1968. Laporan.