MICROSCOPIC STUDY OF OPAQUE MINERALSGALOPIN R; HENRY NFM.1972; CAMBRIDGE W. HEFFER ?; 1972, P. 1 A 322Book

OBSERVATIONS ON SIKA STANDARDS (ABSTRACT).HENRY NFM; VEEN AHVD.1969; MED. DAN. GEOL. FOEREN; DNK; 1969, VOL. 19, NUM. 0003, P. 320 A 321Miscellaneous

FURTHER OPTICAL STUDY OF COVELLITE.COPE MJ; HENRY NFM; SIMPSON PR et al.1975; ; S.L.; RESUME (7TH REG. CONF. STUDY MINER. ARTIF. MATER. POL. SECT. MICROSCALE; CLAUSTHAL-ZELLERFELD; 1975),1975, P. 9Miscellaneous