Robuta

https://doi.pangaea.de/10.1594/PANGAEA.595719 Schweingruber, FH (2007): Tree-ring measurements of Picea obovata (Sibirean spruce) from sample... Schweingruber, Fritz Hans (2007): Tree-ring measurements of Picea obovata (Sibirean spruce) from sample NOJAPCOB-221 [dataset]. Swiss Federal Institute for... tree ring picea obovata measurements spruce sample https://doi.pangaea.de/10.1594/PANGAEA.600320 Schweingruber, FH (2007): Tree-ring measurements of Picea obovata (Sibirean spruce) from sample... Schweingruber, Fritz Hans (2007): Tree-ring measurements of Picea obovata (Sibirean spruce) from sample WHITPCOB-21 [dataset]. Swiss Federal Institute for... tree ring picea obovata measurements spruce sample