-Discus Books/Avon Books, New York, 1979, reprint/7th printing

-ISBN 0380418487

-science/physics

-mass market paperback

-text w/black & white photos

-254 pages

-6.75" x 4.25" x .75"

-condition Good+

  -cover G+

        -glossy w/light wear, front bottom right corner w/1" diagonal crease

        -edges & corners w/wear, top corners lightly creased/bent, corners rounded

        -spin w/lean & faint reading creases

        -binding firmly intact but slightly cocked & loose

  -pages VG

        -text block fore edge w/lean

        -block edges tanned

        -pages tanned

        -pages otherwise like new