Experimental results on the ${{\widetilde{\mathit \chi}}_{{{1}}}^{0}}-{{\mathit p}}$ elastic cross section are evaluated at ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{{1}}}^{0}}}$=100 GeV. The experimental results on the cross section are often mass dependent. Therefore, the mass and cross section results are also given where the limit is strongest, when appropriate. Results are quoted separately for spin-dependent interactions (based on an effective 4-Fermi Lagrangian of the form ${{\overline{\mathit \chi}}}\gamma {}^{\mu }\gamma {}^{5}\chi {{\overline{\mathit q}}}\gamma _{\mu }\gamma {}^{5}{{\mathit q}}$) and spin-independent interactions (${{\overline{\mathit \chi}}}\chi $ ${{\overline{\mathit q}}}{{\mathit q}}$ ). For calculational details see GRIEST 1988B, ELLIS 1988D, BARBIERI 1989C, DREES 1993B, ARNOWITT 1996 , BERGSTROM 1996 , and BAER 1997 in addition to the theory papers listed in the Tables. For a description of the theoretical assumptions and experimental techniques underlying most of the listed papers, see the review on “Dark matter” in this “Review of Particle Physics,” and references therein. Most of the following papers use galactic halo and nuclear interaction assumptions from (LEWIN 1996 ).