00503naa#a2200169#i#450# EN\\bibl\113078 20260318160540.3 2311-1402 20120325b2012####ek#y0engy0150####ca RUS RU Nature of criptomorphic geomorphological structural forms Journal article Nizhnevartovsk Nizhnevartovsk State University 2012 4 с. Journal article local Lopatin Dmitry Valentinovich nvsu.editorum.ru