TY  - BOOK
AU  - Esparza-Olguín,L.
AU  - Valverde,T.
AU  - Vilchis-Anaya,E.
TI  - Demographic analysis of a rare columnar cactus (Neobuxbaumia macrocephala)in the Tehuacan Valley, Mexico
UR  - https://drive.google.com/file/d/1qm4bLyvHqwwUFRbWUJLWsENp6SYCrBr-/view?usp=drivesdk
ER  -