2 1 10 eldon D. Enger Primary Author Frederick C. Ross Primary Author mixed material 0072347031 New York McGraw-Hill Higher Education 2003 WhatsApp_Image_2022-07-27_at_14.55.35.jpeg.jpeg eldon D. Enger Primary Author Frederick C. Ross Primary Author mixed material 0072346949 New York McGraw-Hill 2003 d4355de6-f682-4c74-9c22-a6bcfea8583d.jpg.jpg