@book {19,
	title = {Collecting and preserving herbarium specimens},
	year = {1987},
	publisher = {Arunamarin Publishing},
	organization = {Arunamarin Publishing},
	address = {Bangkok},
	author = {Boonkerd, T., and Wacharapai, M., and Trirattana, S., and Maneerat, Y., and Thaithong, O., and Laichuthai, N.,}
}
