title: Asteroidal source of meteorites.
abstract: The evolution of asteroidal orbits initially near the Kirkwood Gap at the 1:2 commensurability with Jupiter's period provides a mechanism for the production of meteorites from the asteroid belt without excessive velocity change. The resulting yield ( approximately 10(9) grams per year) and the orbital elements of Earth-crossing objects are in agreement with observational data on meteorites.
authors.forename: P D
authors.initials: PD
authors.lastname: Zimmerman
authors.forename: G W
authors.initials: GW
authors.lastname: Wetherill