The physiography of the river Nile and is basin . ^ER WITH SUNSPOT CURVE. ,„ . „ , .LUME DISCHARGED AT ASWAN 1- JULY- 31 ?. OCTOBER 1869-1903. So,le , 4 000 ^mi^c: .f ,c V. «.. wnff tamptl amt. IW 1909. p l>f VARIATION FROM THE MEAN VALUE OF MAXIMUM READINGS OF ROOA GAUGE 1737-1800.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectwatersupply, bookyear