eVolo 2013 : concurso de rascacielos 2013 = eVolo 2013 : 2013 skyscraper competition.

Table of Contents: “…Mención honorífica: Mountain Skyscraper for Abandined Coal Mines / Liangpeng Chen, Yating Chen, Lida Huang, Gaoyan Wu, Lin Yuan…”

Ventilation of mines : generation of the air current / by Briggs, Henry

“…Monographs on coal-mining…”

Songs and ballads of the anthracite miners from the Archive of American Folk Song /

Table of Contents: “…Curtis -- A celebrated workingman -- When the breaker starts up full time -- Union man -- The miner's doom --Down in a coal mine -- The shoofly.…”

Data envelopment analysis : theory, methodology, and application /

Table of Contents: “…Sensitivity analysis of efficiency measures with applications to Kansas farming and Illionois coal mining / Russell Thompson.…”