'Russia at the Crystal Palace�1851', Harpers
Tags: 1950s; 1951; 1951-7-1; Creative ability; Crystal Palace (London; England); Fairs and Expositions; Great Exhibition (1851 : London; Monarchy; Other; Riddle, Edward; Russia
'The conservation of the fertility of soil', Harpers
Tags: 1910s; 1913; 1913-3-1; Agricultural chemistry; Agriculture; Applied Chemistry; Chemistry; Effect of nitrogen on; England; England); Experimentation; Hall, A. D.; Harpenden; History; Nitrogen in agriculture; Plants; Rothamsted Experimental Station (Harpenden; Soil conservation; United States
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