Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets, with much additional material and many new illustrations Q Science
Handbook of birds of the western United States, including the great plains, great basin, Pacific slope, and lower Rio Grande Valley Q Science
Handbook of birds of eastern North America, with keys to the species, and descriptions of their plumages, nests, and eggs, their distribution and migrations .. Q Science
Handbook of British fungi : with full descriptions of all the species, and illustrations of the genera Q Science
