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Trips are held during spring break and summer terms , and course credit is available . The motto and stated premise of the free publication , available for download as a PDF or slightly compressed . These axillary tillers , also called stem tillers or suckers , were extremely vulnerable to development of ergot because they emerged late in crop development when no pollen was available to permit rapid fertilization . DP credit is available to doctoral students only in terms subsequent to the terms in which the student is certified . Six , 12 or 18 hours of in-service credit is available for attending this symposium . Complete details on sensor operation and logic are available on the CBS News / Spaceflight Now ECO sensor page . Incentives in MFIP and SSP were available every month , giving people a reason to keep their jobs or find new jobs , and giving them financial resources to weather crises .