English English English English law of definite proportions English English English http://en.wikipedia.org/wiki/Law_of_definite_proportions English English law of definite proportions English English English English English English English English English law of definite proportions doctrine of fixed and multiple proportions English English English English English English English English English English English English English English English English English English doctrine of fixed and multiple proportions English law of definite proportions English law of definite proportions English English law of definite proportions English English Law of definite proportions English English English doctrine of fixed and multiple proportions English English English English English English