共 7 条
[1]
HUSTRULID WA, 1968, THESIS U MINNESOTA
[2]
HUSTRULID WA, 1965, THESIS U MINNESOTA
[3]
HUSTRULID WA, UNPUBLISHED RESEARCH
[4]
MADSEN R, 1968, PERSONAL COMMUNICATI
[5]
PAONE J, 1968, ROCK DRILLABILITY MI
[6]
1953, 3 BATT MEM I QUART R
[7]
COLLECTED REPORTS 19