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American Journal of Health Planning|December 13, 1977
Time reporting within a health systems agencyR A Ludwig, R P CervenyHealthcare Financial Management : Journal of the Healthcare Financial Management Association|May 10, 1985
Office management: increasing productivity in the workplaceR P Cerveny, G L SandersPlant Physiology|February 1, 1993
Arabidopsis chloroplasts dissimilate L-arginine and L-citrulline for use as N sourceR A LudwigProceedings of the National Academy of Sciences of the United States of America|October 1, 1980
Regulation of Rhizobium nitrogen fixation by the unadenylylated glutamine synthetase I systemR A LudwigJournal of Bacteriology|January 1, 1986
Rhizobium sp. strain ORS571 grows synergistically on N2 and nicotinate as N sourcesR A LudwigProceedings of the National Academy of Sciences of the United States of America|May 1, 1987
Gene tandem-mediated selection of coliphage lambda-receptive Agrobacterium, Pseudomonas, and Rhizobium strainsR A LudwigProceedings of the National Academy of Sciences of the United States of America|March 1, 1984
Rhizobium free-living nitrogen fixation occurs in specialized nongrowing cellsR A LudwigJournal of Bacteriology|March 1, 1980
Physiological roles of glutamine synthetases I and II in ammonium assimilation in Rhizobium sp. 32H1R A LudwigActa Cytologica|May 1, 1987
Bronchoscopic cytology of metastatic breast carcinoma with osteoclastlike giant cellsR A Ludwig, M GeroPageof 3