TY - BOOK ID - 140621222 TI - Parallel growth of nepheline and microperthitic kalsilite from North Kivu, Belgian Congo PY - 1953 PB - Helsinki Suomalainen Tiedeakatemia DB - UniCat KW - Kalsiliet KW - Kalsilite KW - Nephelien KW - Néphéline KW - 549.621.4 (675.572) UR - https://www.unicat.be/uniCat?func=search&query=sysid:140621222 AB - ER -