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Neutral Carbon in the Protoplanetary Nebulae CRL 618 and CRL 2688K. YoungUniversity of Chicago Press1997DOI 10.1086/310926
Infrared Spectroscopy of the Transition Objects CRL 618 and CRL 2688Beck, S.C.Cambridge University Press1983DOI 10.1017/s007418090009361x
Food Prospects of Selenium Enriched- Lactobacillus Acidophilus CRL 636 and Lactobacillus Reuteri CRL 1101Pescuma, MicaelaElsevier2017DOI 10.1016/j.jff.2017.06.009
