Par 1 Maryla Jonas, Polish-born concert pianist, died Friday at her home, 952 Fifth Avenue, of systematic [systemic] monoliasis, a rare blood disease that had hindered her career in recent years. Her age was 48. She was the wife of Dr. Ernest G. Abraham, a gynecologist.

Par 2 Miss Jonas made her United States debut at Carnegie Hall in February, 1946. As an unheralded newcomer, she received favorable routine reviews, but the next month the late Olin Downes, reviewing a recital before a crowded house in the same hall, wrote in The New York Times that "she has few equals as an interpreter among the leading pianists of today."

Par 3 Almost five years later, Miss Jonas fainted in the wings of Carnegie Hall after leaving the stage part way through her performance of Schumann's "Carnaval." She recovered quickly and completed her program. Her illness forced her temporary retirement, but in December, 1956, she gave what was to be her last recital here.

Par 4 Miss Jonas had appeared as a soloist with the New York Philharmonic - Symphony Orchestra in Carnegie Hall, and also had made recordings. Some of these still are heard on radio station WQXR.

Par 5 As a child prodigy, Miss Jonas made her debut in Warsaw at the age of 9 and became a pupil of Paderewski. She won an International Chopin Prize in 1922 and the Beethoven Prize of Vienna the next year.

Par 6 She was in bombed-out Warsaw when it was captured by the Nazis, but escaped in 1940, a feat that was described later as "miraculous." Walking day and night, she traveled 325 miles to the Brazilian Embassy in Berlin.

Par 7 From there, Miss Jonas went to Rio de Janeiro, where her married sister, Mrs. Bertha Holin, then lived, and entered a sanitarium. Later she heard that her first husband, a noted criminologist, her parents and a brother had been killed in Poland. Her father had been a well known surgeon in Warsaw.

Par 8 In Rio, Miss Jonas gave up playing for months. It has been said that her fellow countryman, Artur Rubinstein, induced her to return to the piano. She toured South America to obtain funds to come to New York.

Par 9 Surviving, besides her second husband and Mrs. Holin, is a brother, George. Mrs. Holin and her husband now live in Brooklyn.