http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Kỹ thuật chăm sóc và lai tạo giống cá đĩa (Tài liệu mới)
Tài liệu giới thiệu về thú chơi cá kiểng, cách chăm sóc và lai tạo giống cá đĩa.