1. #Tree rings
Author: #Fritz Hans Schweingruber
Library: Central Library of Esfehan University of Technology (Esfahan)
Subject: Tree-rings ،Dendrochronology
Classification :
#
QK
،#.
A6
,
S3913
2. Tree rings
Author: Fritz Hans Schweingruber
Library: Central Library and Information Center of Shahed University (Tehran)
Subject: Tree --rings,Dendrochronology
Classification :
QK
،
477
.
2
،.
A6
,
S3913
،
1987
