Correspondence, reports and other papers dealing with the " Mallmann Continous Steel Process " and Mallmann's other engineering endeavours

Description data TOP

unitid

{"value"=>"992224", "type"=>"local_mss"}

unitdate

{"value"=>"circa 1922-1924", "type"=>"inclusive", "certainty"=>"approximate", "normal"=>"1922/1924"}

date_inclusive_start

1922

date_inclusive_end

1924

keydate

1922

date_start

1922

date_end

1924

unittitle

{"value"=>"Correspondence, reports and other papers dealing with the \" Mallmann Continous Steel Process \" and Mallmann's other engineering endeavours"}

container

{"type"=>"box", "value"=>"3"}

Child components TOP

No child components.