VARIATION OF RUNOFF AND ITS FACTORS
The editorial board of the journal «Bullctin of VSU. Scrics: Gcography. Geoccology» publishes the monograph of N.P. Chebotarcv «Variation of runoff and its factors». Thc issuc raised by thc author in thc middle of thc 20th century is still relcvant today. However, thc monograph of N. P. Chebotarcv bccamc a bibliographic rarity immediatcly after the publication. Thc text of thc book is reproduccd in thc author's version. To understand thc importance of thc problem in modern rescarch in the ficld of hydrology, thc publication of the book is precedcd by a comment by S.D. Dcgtyarev - candidate of geographical scicnces.