In addition to the yield history and risk areas, the other key factors used for MASC purposes in establishing the productivity rating of a soil include the soil properties (texture, organic matter, ...

The universal homogeneous triangle-free graph, constructed by Henson [A family of countable homogeneous graphs, Pacific J. Math.38(1) (1971) 69–83] and denoted ℋ 3, is the triangle-free analogue of ...