31.   Book bags were never designed to carry such heavy loads, manufacturers say.

32.   Both GE and GM specialize in making engines for pulling mile-long freight trains filled with heavy loads.

33.   Both transmissions had very nice, from-the-gut-down-low gearing for those initial starts with heavy loads.

34.   A heavy load of reality and fiction has come between Jules Verne and HBO, and this project is fully aware of them.

35.   African women who carry heavy loads on their heads with apparent ease have mastered a walking technique that conserves energy, researchers say.

36.   Also included is automatic rear level control to let the wagon carry heavy loads without overtaxing the suspension system.

37.   But a lighter schedule for Tilberis is still a heavy load for most people.

38.   But he said small businesses with a heavy load of short-haul long-distance calls might find it worthwhile.

39.   But just as important, he said, have been changes at home that enable women to handle heavy academic loads.

40.   But the energy they save offsets the extra muscular energy required to support the heavy load, he said.