Some supplementary records to Muschler's manual flora of Egypt : including many species collected by G. W. Murray.

von Simpson, Norman Douglas
Bulletin / Technical and Scientific Service, Botanical Section 93
Cairo : Government Press, 1930.
Umfang/Format: IV, 59 S., 11 S. ; 27 cm.

A report on the weed flora of the irrigation channels in Egypt

von Simpson, Norman Douglas
Cairo : Government Press, 1932.
Umfang/Format: VII, 124 S., Ill. (= 38 pl., 7 fig.) ; 34 cm.