(Q33818317)
Statements
1 reference
Airways obstruction, coal mining, and disability (English)
1 reference
Lapp NL
1 reference
Morgan WK
1 reference
Zaldivar G
1 reference
1 April 1994
1 reference
1 reference
234-238
1 reference
1 reference
1 reference
1 reference
Identifiers
1 reference
1 reference
1 reference