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Plant Adaptations to Phosphate Deficiency
Phosphate is an essential mineral to all plants, and its availability in soils is an increasing challenge for agriculture. Phosphate is abundant in soils but its biological availability is often low due to the complexes that it forms with soil minerals and compounds. The biological availability of Phosphate is further reduced in acidic soils, which represent approximately 40% of earth’s arable agricultural lands. Agricultural systems compensate Phosphate deficiency with fertilizers coming from the mining of rock phosphate, which is estimated to exhaust within the next 50 years. For these reasons, Phosphate limitations in natural and agricultural ecosystems is going to become a global problem, and we urgently need to better understand how plants respond to Phosphate deficiency.
The Navy List
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Hands-on Manual for Cinematographers
Contains information, theory, diagrams and tables on various aspects of cinematography, ranging from camera choice, maintenance and threading diagrams; to electricity on location, equipment checklists, film stock, lenses, light and colour. This work includes sections on special effects and utilities. The "Hands On" Manual for Cinematographers contains a wealth of information, theory, diagrams and tables on all aspects of cinematography. Widely recognised as the "Cinematographer's Bible" the book is organised in a unique manner for easy reference on location, and remains an essential component of the cameraman's box. Everything you need to know about cinematography can be found in this book - from camera choice, maintenance and threading diagrams; to electricity on location, equipment checklists, film stock, lenses, light and colour. Of particular use will be the mathematics, formulae, look up tables and step by step examples used for everything from imperial/metric conversions to electricity, exposure, film length, running times, lights and optics. Sections on special effects and utilities are also included as well as a list of useful websites.
The Early History of Elora, Ontario and Vicinity
Elora: The Early History of Elora and Vicinity provides little-known details about the settlement and development of the Elora area in southern Ontario from the earliest settler in 1817. Then, as now, people were drawn to the Elora Gorge and the rocky banks of the Grand River. The book is a compilation of material that appeared weekly in The Elora Express between 1906 and 1909 with some additional material from the 1920s. Connon traces the settlers as they arrive and reports on the development of the town as they acquired a grist mill, a store, a bridge, and inevitably a railway. Rich with genealogical information, this is an important historical document. Introduction by Gerald Noonan.
House documents
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