text Manila Bureau of Printing 1957 Ind 4:00 PM 4:00 PM ills.Repr.: The Philippine Journal of Science 85(4), 1956: 517-520 TJOA TJIEN MO 595.76 INLIS000000000022520 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)