One of the main work of the Hong Kong Geological Survey, under the Civil Engineering and Development Department, is to collect and store rock specimens from different areas of Hong Kong.
One of the main work of the Hong Kong Geological Survey, under the Civil Engineering and Development Department, is to collect and store rock specimens from different areas of Hong Kong.
One of the main work of the Hong Kong Geological Survey, under the Civil Engineering and Development Department, is to collect and store rock specimens from different areas of Hong Kong.
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