Facsimile · p. 71
INFLUENCE OF CROP ON EVAPORATION. Evaporation in Millimetres 21 20 18 16 14 12 10 8 6 4 2 0 JANUARY FEBRUARY MARCH Purple Desert Screen. Red Farm. Green Tube sheltered by Wheat.
Sudan ArchiveSudan ArchiveFacsimile · p. 71
INFLUENCE OF CROP ON EVAPORATION. Evaporation in Millimetres 21 20 18 16 14 12 10 8 6 4 2 0 JANUARY FEBRUARY MARCH Purple Desert Screen. Red Farm. Green Tube sheltered by Wheat.