muchlis. ANALYSIS OF CHANGES IN BACKPACK DESIGN CAUSED BY DEVELOPMENTS IN MOUNTAIN CLIMBING EQUIPMENT TECHNOLOGY AND TRAVEL MANAGEMENT TECHNIQUES: ANALYSIS OF CHANGES IN BACKPACK DESIGN CAUSED BY DEVELOPMENTS IN MOUNTAIN CLIMBING EQUIPMENT TECHNOLOGY AND TRAVEL MANAGEMENT TECHNIQUES. idealog [Internet]. 2025 Jul. 21 [cited 2026 Jan. 16];10(1). Available from: https://journals.telkomuniversity.ac.id/idealog/article/view/8354