Knowlton's cactus
2004
Sivinski, R. 2004. Knowlton's Cactus (Pediocactus knowltonii): Progress Report. New Mexico Forestry Division; Santa Fe, New Mexico. 13 p.
U04SIV01NMUS
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2012
Roth, D. 2012. Pediocactus knowltonii (Knowlton's cactus): 2012 status report. Santa Fe, NM: NM Energy, Minerals and Natural Resources Department - Forestry Division; Report E-9-26 to U.S. Fish and Wildlife Service. 25p.
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2006
Sivinski, R. 2006. Knowlton's Cactus (Pediocactus knowltonii): Progress Report for U.S. Fish and Wildlife Service Section 6, Segment 20.
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2009
Glenne, G. and E. Mayo. 2009. Field survey form for Knowlton cactus (Pediocactus knowltonii). 4 p.
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2016
Roth, D. 2016. Pediocactus knowltonii (Knowlton's Cactus): 2015 summary report, Section 6, segment 29. New Mexico Energy, Minerals, and Natural Resources Department, Forestry Division, Santa Fe, NM. 32 p.
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2015
Roth, D. 2015. Pediocactus knowltonii (Knowlton's Cactus) summary report, 2014. NM Energy, Minerals, and Natural Resources Department.
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2020
Roth, D. 2020. Pediocactus knowltonii (Knowlton’s Cactus) Summary Report (Section 6, Segment 34, 2020. EMNRD).
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2016
Roth, D. 2016. Pediocactus knowltonii (Knowlton’s Cactus) 30-year Summary Report (Section 6, Segment 30). Unpublished report prepared by EMNRD-Forestry Division, Santa Fe, NM for the U.S. Fish & Wildlife Service, Region 2, Albuquerque, NM.
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