"Voortgezet onderwijs." . . . . . "Practical work in school science : an account of an inquiry sponsored by the Gulbenkian foundation into the nature and purpose of practical work in school science teaching in england and wales" . . "Practical work in school science : an account of an inquiry ... into the nature and purpose of practical work in school science teaching in England and Wales" . . . . . "Practical work in school science; an account of an inquiry sponsored by the Gulbenkian Foundation into the nature and purpose of practical work in school science teaching in England and Wales"@en . "Practical work in school science : An account of an inquiry sponsored by the Gulbenkian Foundation into the nature and purpose of practical work in school science teaching in England and Wales" . . . . . . . . . . . . . . "Practical work in school science an account of an inquiry sponsored by the Gulbenkian Foundation into the nature and purpose of practical work in school science teaching in England and Wales"@en . . . . "Natuurwetenschappen." . . "Practica." . . "Experimenten." . . "Technische wetenschappen." . .