000 00811nam a2200217 a 4500
003 0
005 20250322081835.0
008 060801s19uu xx 00 eng d
050 _aPGS TP 910.C37
_b.H772 2006
100 _aHong, Sung Hee.
245 _aFeasibility of carrot extract as invisible ink /
_cSung Hee Hong.
260 _aLas PiƱas City, Philippines :
_bSouthville International School and Colleges,
_c2006.
300 _a20 pages :
_billustrations ;
_c28 cm.
504 _aIncludes bibliographical references.
650 _aInvisible inks
_vChemical properties.
650 _aNatural dyes and pigments.
650 _aCarrot extract
_vChemical composition.
650 _aSecret writing
_vOrganic compounds.
650 _aFeasibility studies
_vNatural ink sources.
942 _2lcc
_cPASS
999 _c97493
_d97493