define alpha rays:

define anthropometry:

define arches:

define assassination:

define autopsy:

define auto radiogram:

define Bertillon system:

define bio metric facial recignition:

define CCTV:

define composite:

define diatoms:

define dioxins:

define gel electrophoresis:

define identikit:

define loops:

define Polonium-210:

define retroactive interference:

define ricin:

define whorls:

how many types of fingerprints are there?