TY  - RPRT
TI  - Electron microscopic observations of microcracking about indentations in aluminum oxide and silicone carbide 
AU  - Hockey, B J
AU  - Lawn, B R
PY  - 1975
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 75-658
DO  - 10.6028/NBS.IR.75-658
ER  -