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Fibre optic interconnecting devices and passive components - Performance standard Part 1- General and guidance (IEC 61753-1-2018). Original standard BS EN IEC 61753-1-2018 in PDF full version. Additional info + preview on request

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Fibre optic interconnecting devices and passive components - Performance standard Part 1- General and guidance. Original standard BS EN IEC 61753-1-2018 (2019) in PDF full version. Additional info + preview on request

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Fibre optic sensors - Part 4-3- Electric current measurement. Polarimetric method. Original standard BS EN IEC 61757-4-3-2020 in PDF full version. Additional info + preview on request

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Industrial communication networks - Profiles Part 5-2- Installation of fieldbuses - Installation profiles for CPF 2. Original standard BS EN IEC 61784-5-2-2018 in PDF full version. Additional info + preview on request

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Industrial communication networks - Profiles Part 5-21- Installation of fieldbuses - Installation profiles for CPF 21. Original standard BS EN IEC 61784-5-21-2018 in PDF full version. Additional info + preview on request

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Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections Part 2- Ceramic enclosures (IEC 61837-2-2018). Original standard BS EN IEC 61837-2-2018 in PDF full version. Additional info + preview on request

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