THEORY OF VERTICAL AUGER ARPN Journals
THEORY OF VERTICAL AUGER Aleksandra Vladimirovna Rud 1 Natalya Nikolayevna Evstratova1 Vladimir Aleksandrovich Evstratov Denis Vasilyevich Bogdanov2 Svetlana Yurievna Lozovaya2 and Artem Sergeevich Lunev2 1Shakhty Institute of Platov South – Russian statement polytechnic University Novotchercassk polytechnic Institute Russia Shakhty Lenin square 1 2Belgorod State