20,000 baseball cards under the sea
著者
書誌事項
20,000 baseball cards under the sea
（Step into reading, Step 4 ; Reading paragraphs）
Random House, c1991
- : trade
大学図書館所蔵 全17件
注記
Summary: Roger's friend Kenneth uses an unusual sea vehicle of his own design to take them to an underwater cave, where a cache of old loot gathered by the mermaids turns out to contain a lot of very valuable old baseball cards