Milestones, Jun. 11, 1973

Engaged. Princess Anne, 22, second of Queen Elizabeth's four children and fourth in line to the British throne; and Lieut. Mark Phillips, 24, officer in the Queen's Dragoons {see THE WORLD).

Died. Mikhail D. Millionshchikov, 60, physicist and vice president of the Soviet Academy of Sciences; reportedly of cancer; in Moscow. One of Russia's leading scientific spokesmen, Millionshchikov signaled a major shift in his country's policy when, in a surprise statement at a 1970 U.S. news conference, he became the first major Soviet official to propose cooperation with the U.S. in the exploration of space.

Died. Harvey S. Firestone Jr., 75, former president and board chairman of the Firestone Tire and Rubber Co.; of cancer; in Akron. The eldest son of the company's founder, Firestone was named one of the firm's directors in 1919 while still an undergraduate at Princeton. During the next half-century, the quiet, precise businessman oversaw much of the firm's diversification, its expansion into 23 countries, and as chief executive officer (1948-63), watched annual sales double to $ 1.3 billion. An active philanthropist, Firestone served as chairman of the USO for 15 years and as president of the Firestone Foundation since 1948.

Died. Jacques Lipchitz, 81, one of the greatest sculptors of the 20th century; of a heart attack; in Capri. From his native Lithuania, Lipchitz immigrated to France at 18 and became the youngest member in a group of cubist artists that included Pablo Picasso, Juan Gris and Georges Braque. Working in stone and bronze, Lipchitz simplified human figures into multiplaned, crystal-like abstractions. During the '20s, he began to reverse the process and "from a crystal build a man, a woman, a child." His ideal became Rodin rather than Picasso, his work more monumental, his themes heroic. During World War II, Lipchitz fled France for the U.S. and for the next 30 years concentrated on giant allegorical figures from Greek mythology and the Old Testament. Lipchitz was buried in Jerusalem where 300 of his sculptures have been bequeathed to the Museum of Art.

Died. Fred Lazarus Jr., 88, retailing wizard who started as a collar salesman in his family's Columbus store and became organizer and, in 1945, president of Federated Department Stores, Inc., a coast-to-coast retailing combine that now includes Bloomingdale's of New York, Filene's of Boston, Bullock's of California, and the original F. & R. Lazarus store in Columbus; of a heart attack; in Cincinnati.