Black Sheep Astray
In terms of plot , "Black Sheep Astray" is the last in a sequence of near-future stories set in North Africa , which also includes "Black Man's Burden" ( 1961-2 ) , "Border , Breed nor Birth" ( 1962 ) , and "The Best Ye Breed" ( 1978 ) . 
<triplet> Black Man's Burden <subj> Border, Breed nor Birth <obj> followed by <triplet> Border, Breed nor Birth <subj> Black Sheep Astray <obj> followed by <subj> The Best Ye Breed <obj> followed by