TY  - BOOK
AU  - Mackie, Penelope.
TI  - How things might have been: individuals, kinds, and essential properties 
SN  - 9780199562404
AV  - B 105.E65 .M33 2006
PY  - 2006///
CY  - New York
PB  - Oxford University Press
KW  - Essentialism (Philosophy)
N1  - Includes bibliographical references and index
ER  -