Oceans Irving Adler,Ruth Adler Popularity → Current 12 Peak 45 Niche 65 A description of sea life and a definition of currents, tides, and the ocean's influence on weather. John Day Company 1962 48 pages
Numerals (Reason Why) Irving Adler,Ruth Adler Popularity → Current 10 Peak 40 Niche 60 Dobson Books Ltd 1965-04-01 50 pages
Irrigation: Changing Desert into Garden (Reason Why) Irving Adler,Ruth Adler Popularity → Current 10 Peak 38 Niche 58 Dobson Books Ltd 1966-06-01 50 pages
