@article {38469,
	title = {Provenance variation in eraly growth and development of Picea mariana (Mill) B. S. P.},
	volume = {187},
	year = {1992},
	publisher = {Studia Forestaia Suecica},
	url = {http://pub-epsilon.slu.se:8080/1064/01/SFS187.pdf},
	author = {St{\r a}hl, Erik G. and Persson, Bengt}
}
