TY - GEN N2 - cse-90-025 DO - 10.6083/dr26xx63g DO - DOI AB - cse-90-025 T1 - Air traffic control communication at Portland International Airport: July 1, 1990 DA - 1990 AU - Ward, Karen L1 - https://digitalcollections.ohsu.edu/record/3908/files/csetech-225.pdf PY - 1990 ID - 3908 L4 - https://digitalcollections.ohsu.edu/record/3908/files/csetech-225.pdf TI - Air traffic control communication at Portland International Airport: July 1, 1990 Y1 - 1990 L2 - https://digitalcollections.ohsu.edu/record/3908/files/csetech-225.pdf LK - https://digitalcollections.ohsu.edu/record/3908/files/csetech-225.pdf UR - https://digitalcollections.ohsu.edu/record/3908/files/csetech-225.pdf ER -