@book {16238,
	title = {Notes For.Inst.Nat.Centr.Univ.Nanking,Dendrol,Ser.},
	volume = {1},
	year = {1947},
	author = {Cheng}
}
@book {15569,
	title = {Sargentia},
	volume = {7},
	year = {1947},
	author = {A.C.Smith}
}
@book {4552,
	title = {Trav.Lab.Forest.Toulouse I},
	volume = {4},
	year = {1947},
	author = {Borderes \& Gaussen}
}
