TY - `BOOK` PB - Univ. of Illinois CY - Urbana, Ill. PY - 1951 LA - eng SE - 48 S. T2 - Engineering Experiment Station bulletin M1 - no. 397 T2 - University of Illinois bulletin M1 - volume 49, number 31 CN - H 254-16 K::397 AN - UBHD-2632740 ER -