लेखक: Lucas A. Becker

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2 द्वारा ईबुक Lucas A. Becker

Lucas A Becker: Helium
Helium is the chemical element with atomic number 2 and an atomic weight of 4.002602, and is represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas that …
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€166.96
Hossain Ali: Irrigation Management, Technologies and Environmental Impact
Today’s irrigation management faces challenges and competition with other sectors (ie, household, industry, and environmental), quality degradation, and uncertain climatic conditions. To cope with th …
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€280.04