if volume is not available, export issue to 936d instead of 936e, see ubtue/DatenProbleme#62
if volume is not available, export issue to 936d instead of 936e, see ubtue/DatenProbleme#62

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools