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ভূমির ঢাল, নুড়ি, কাকর, বালির পর্যাপ্ত জোগান, আবহাওয়া ও জলবায়ুগত অবস্থা, ভূমিরূপ ও ভূতাত্ত্বিক গঠন, ভূ-আলােড়ন প্রভৃতি আরােহণ প্রক্রিয়ার নিয়ন্ত্রক।
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ভূমির ঢাল, নুড়ি, কাকর, বালির পর্যাপ্ত জোগান, আবহাওয়া ও জলবায়ুগত অবস্থা, ভূমিরূপ ও ভূতাত্ত্বিক গঠন, ভূ-আলােড়ন প্রভৃতি আরােহণ প্রক্রিয়ার নিয়ন্ত্রক।