Titel
New methods of winning : definition of a possible alternative methods of coal extraction aimed at reduction in manual dependence and cost and increase in utilization of colliery reserves
Beschreibung
New methods of winning : definition of a possible alternative methods of coal extraction aimed at reduction in manual dependence and cost and increase in utilization of colliery reserves / NCB, London
Physische Beschreibung
31 p., [6] p. di tav. : ill. ; 30 cm
Notiz
In testa al frontespizio: Commission of the European Communities.
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