James, Albert.
Balancing things / [book] - London : Macdonald Educational, c1973. - 27 p. : ill. ; 21 cm. - Starters science ; 4 . - Starters science ; ; 4 .
Includes index.
0356092844 0356044467 0356044467 : $2.95
Balance.
Mechanics.
Balance.
Mechanics.
LB 1532 / S79 v.4
531 JAM
Balancing things / [book] - London : Macdonald Educational, c1973. - 27 p. : ill. ; 21 cm. - Starters science ; 4 . - Starters science ; ; 4 .
Includes index.
0356092844 0356044467 0356044467 : $2.95
Balance.
Mechanics.
Balance.
Mechanics.
LB 1532 / S79 v.4
531 JAM