TY - BOOK ED - American Society for Testing Materials. [from old catalog] TI - Symposium on mineral aggregates, 1948: Fifty-first annual meeting, American Society for Testing Materials, U1 - 620.191 PY - 1948///] CY - Philadelphia KW - Aggregates (Building materials) KW - MCE N1 - 0; 0; 0; 620_191000000000000_AME ER -