Ukky Martha's Notes
The Present is the key to The Past
Laman
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Geology and Me
Geology and Me
Pantai Sundak di Wonosari
Bentuk Lahan Eolian di Parangtritis Yogyakarta
Perlapisan Batuan Sedimen di Kali Bades Semarang
Teluk Awur di Jepara
Intrusi Batuan Beku di Gunung Kendalisada Semarang
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