Perlite and vermiculite
Petrov, V P
Perlite and vermiculite / Indian National Scientific Documentation Centre - New Delhi: Indian National Scientific Documentation Centre, 1973 - 217p.
Geology
553.535+553.678 / L3
Perlite and vermiculite / Indian National Scientific Documentation Centre - New Delhi: Indian National Scientific Documentation Centre, 1973 - 217p.
Geology
553.535+553.678 / L3