खोदक मशीन, निर्माण, अभियांत्रिकी, प्रौद्योगिकी, निर्माण स्थल, निर्माण साधन, निर्माण उद्योग, मशीनरी, उद्योग, काम कर रहे, उपकरण
Public Domain
प्रासंगिक तस्वीरें
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