Library of Congress classification schedules combined with additions and changes through 1986 Class U Naval science

Ижил төстэй зүйлс

• Library of Congress classification schedules combined with additions and changes through 1986 Class S Agriculture
  Хэвлэсэн: (1987)
• Library of Congress classification schedules combined with additions and changes through 1986 Class T Technology
  Хэвлэсэн: (1987)
• Library of Congress classification schedules combined with additions and changes through 1986 Class U Military science
  Хэвлэсэн: (1987)
• Library of Congress classification schedules combined with additions and changes through 1986 Class L Education
  Хэвлэсэн: (1987)
• Library of Congress classification schedules combined with additions and changes through 1986 Class Q Science
  Хэвлэсэн: (1987)