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We have measured fragment cross-sections of projectile fragmentation reactions using primary beams of {sup 40}Ca, {sup 48}Ca, {sup 58}Ni, and {sup 64}Ni at 140 MeV/nucleon on {sup 9}Be and {sup 181}Ta targets. The cross-sections were obtained by integrating the momentum distributions of isotopes with Z{>=}5 measured in the A1900 fragment separator. We compare the extracted cross-sections to the predictions of the empirical parametrization of fragmentation cross-sections (EPAX)