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Welcome to eGyanKosh, your comprehensive resource for academic materials from the Indira Gandhi National Open University (IGNOU). In this section, we are excited to present the Study Material for Unit-8: Principles of Maintenance, an essential component for your coursework in 2025. Whether you are a student eager to enhance your understanding of maintenance principles or an educator seeking supplemental resources, our free downloadable materials are designed to cater to your academic needs. Dive into the wealth of knowledge provided in this unit and empower your learning journey with easy access to high-quality content tailored for IGNOU students.