civil engineer Surjono Utomo (Indonesia) |
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Address: | Jl. Cempaka Putih Timur 13A / 2 Jakarta Pusat 10510 |
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Website: | cku.co.id |
Interests: | karst, caving activities |
Member of Speleogenesis.info since 2012-01-01
civil engineer Surjono Utomo (Indonesia) |
|
![]() |
Address: | Jl. Cempaka Putih Timur 13A / 2 Jakarta Pusat 10510 |
---|---|
Website: | cku.co.id |
Interests: | karst, caving activities |