...Frobenius' newly published Voice ofAfrica is broad-minded and informing, and Brown's Story of Africaand its Explorers brings together much material in readable form... 
W.E.B. Du Bois 「The Negro」
...Sir Emerson Tennant in his "Ceylon," but especially in his"Natural History," volumes, has given some truly readable chapters onthe Asiatic elephant...
Various 「Heads and Tales」
..."Decidedlyoriginal in substance, and the most readable and informative littlebook on modern astronomy we have seen for a long time...
Robert Marett 「Anthropology」
..."From cover to cover the book is readable, and every word isintelligible to the layman...
Cecil G. Dolmage 「Astronomy of To-day」
...Thus we have brought to our doors a readable record of the verysubstances composing every world hot enough to shine by its ownlight...
Henry Warren 「Recreations in Astronomy」
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