TY JOUR TI DEDICATED TO THE 55TH ANNIVERSARY OF THE VOLZHA SRI OF HYDRAULIC ENGINEERING AND RECLAMATION. STAGES OF FORMATION AND CONTRIBUTION TO THE DEVELOPMENT OF RECLAMATION IN THE POVOLGA REGION KW land reclamation KW irrigated lands KW research activities JO Melioration and Water Management AU Hopkalov, Y.A. PY 2022 IS 2021 PB ANO Editorial Board Melioration and water management