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TitleDateType
1 Diary of Zilla (Linford) Richards, 1950 European trip, June 28 to September 61950Text
2 Picture passport to Israel1971Text
3 Why wicks work1931Text
4 Letter dated 21 December 1987 from Douglas Helms to Lorenzo A. Richards1987-12-21Text
5 Report of the Subcommittee on Permeability and Infiltration, Committee on Terminology, Soil Science Society of America1952Text
6 Minutes of the sessions of the ISSS Council at the 1986 meeting of the International Society of Soil Science in Hamburg, Germany1986Text
7 Water conducting and retaining properties of soils in relation to irrigation1952Text
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