AlNajaar, J. 2021. The Effect of Both the Nature of the Activity and the Size of Financial Investments on the Financial Structure and Market Value: Evidence From Palestine. "A Study From The perspective of Trade-off and Pecking-Order Theories" . Al-Balqa Journal for Research and Studies. 24, 1 (Jun. 2021), 61–76. DOI:https://doi.org/10.35875/1105-024-001-005.