Shull, R. L., & Guilkey, M. (1976). Food deliveries during the pause on fixed-interval schedules.
Chicago Stili AlıntıShull, Richard L., ve Marilyn Guilkey. Food Deliveries During the Pause On Fixed-interval Schedules. 1976.
MLA AlıntıShull, Richard L., ve Marilyn Guilkey. Food Deliveries During the Pause On Fixed-interval Schedules. 1976.
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