Normirovanie kachestva ugleĭ.
Edition: [2., perer. i dop. izd.]
Publisher: Gos. nauchno-tekhn. izd-vo lit-ry gornomu delu
Published: 1960
Place of publication: Moskva
Language: rus
Number of pages: 169
Subjects: Coal -- Grading.
Notes: Bibliography: p. [170]