00465nam a22001817a 4500003000400000082001800004100001500022245003000037260006500067300001000132546001200142650002400154650002100178650001900199650002000218650002400238700002100262OSt  a589.3bROG/BL  aRoger, P A  aBlue green algae and rice  aPhilippinesbThe international rice research institutec1980  a112p.  aEnglish  aDescriptive ecology  aPhysical factors  aBiotic factors  aSoil properties  aAgronomic practices  aKulasooriya, S A