Find Theses from Cal PolyTheses written at Cal Poly must be deposited in the institutional repository, Digital Commons.
This link leads to the Advanced Search interface, with a filter for Master's Theses selected. To find this option from the main link, under Browse on the right column (green) choose Collections>Research>Student Research>Master’s Theses (under Graduate Research). Choose Advanced search (right). You can change the search field from All Fields to Subject to search for disciplines like nutrition.