TY - BOOK AU - Armstrong, Patrick, 1941- SN - 0727013513 : PB - Rigby TI - Understanding rocks, minerals & fossils / Patrick Armstrong T3 - Rigby instant book KW - Rocks. CY - [Adelaide] N1 - Rocks (ANB/PRECIS SIN 0484857) N1 - Cover title. PY - 1981 M1 - Accessed from http://nla.gov.au/nla.cat-vn1579634 ER -