Electrophoretic and morphological analysis of Paramacropostrongylus typicus (Nematoda: Strongyloidea), with the description of a new species, Paramacropostrongylus iugalis, from the eastern grey kangaroo Macropus giganteus. Systematic Parasitology, 24(1), January 1993: 35-44. 41 [Zoological Record Volume 130]