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About The Authors

Angel Lengerov
Department of Machine Tools and Mechanical Engineering, Technical University
Bulgaria

Galina Nikolcheva
Department of Machine Tools and Mechanical Engineering, Technical University
Bulgaria

Julieta Kaleycheva
Department of Machine Tools and Mechanical Engineering, Technical University
Bulgaria

Lyubomir Lazov
Rezekne Academy of Technologies, Leading researcher Lanologysertech
Bulgaria

ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference