Smyrnew, John Michael.2009-03-202009-03-2019851985Source: Masters Abstracts International, Volume: 40-07, page: .9780315217577http://hdl.handle.net/10393/4947http://dx.doi.org/10.20381/ruor-14112Biology, General.Accuracy of judgement in size of three-dimensional bars in perspective using the pillar mapping program.Thesis