00507    a2200157   450000500170000002000220001708200210003924500730006026400570013330000400019052600120023065000420024265000370028494200110032199900170033220260603193111.0  a978-621-409-297-0  2330.09 P277 2025  aMathematics, science, and technology : People and earth's ecosystem  1aMandaluyong city . bBooks Atbp . Publishing. c2025  aviii pages :billustrations ;c22cm  a300-399  aMathematics, science, and technology   aEconomic situation and condition  2ddccB  c41256d41256