00342nam a22000977a 4500008004100000022001400041040005500055245005700110260006100167310001600228230915b        |||||||| |||| 00| 0 eng d  a0028-0011  aNational Science LibrarycNational Science Library  aJournal of the national research council of Thailand  aBangkok: bNational Research Council of Thailand, c1960  aHalf-yearly